Package structure

ABSTRACT

A package structure including a first redistribution circuit structure, a semiconductor die, first antennas and second antennas is provided. The semiconductor die is located on and electrically connected to the first redistribution circuit structure. The first antennas and the second antennas are located over the first redistribution circuit structure and electrically connected to the semiconductor die through the first redistribution circuit structure. A first group of the first antennas are located at a first position, a first group of the second antennas are located at a second position, and the first position is different from the second position in a stacking direction of the first redistribution circuit structure and the semiconductor die.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation application of and claims thepriority benefit of a prior application Ser. No. 16/671,182, filed onNov. 1, 2019 and now allowed. The prior application Ser. No. 16/671,182is a continuation application of and claims the priority benefit of aprior application Ser. No. 15/879,456, filed on Jan. 25, 2018 and nowallowed, which claims the priority benefit of U.S. provisionalapplication Ser. No. 62/565,107, filed on Sep. 29, 2017. The entirety ofeach of the above-mentioned patent applications is hereby incorporatedby reference herein and made a part of this specification.

BACKGROUND

Semiconductor devices and integrated circuits used in a variety ofelectronic applications, such as cell phones and other mobile electronicequipment, are typically manufactured on a single semiconductor wafer.The dies of the wafer may be processed and packaged with othersemiconductor devices (e.g. antenna) or dies at the wafer level, andvarious technologies have been developed for the wafer level packaging.

BRIEF DESCRIPTION OF THE DRAWINGS

Aspects of the present disclosure are best understood from the followingdetailed description when read with the accompanying figures. It isnoted that, in accordance with the standard practice in the industry,various features are not drawn to scale. In fact, the dimensions of thevarious features may be arbitrarily increased or reduced for clarity ofdiscussion.

FIG. 1A is a schematic three-dimensional side-view diagram of a packagestructure according to some exemplary embodiments of the presentdisclosure.

FIG. 1B is a schematic cross-sectional view of the package structuredepicted in FIG. 1A.

FIG. 1C is a schematic explosive view illustrating the package structuredepicted in FIG. 1A.

FIG. 2A is a schematic three-dimensional side-view diagram of a packagestructure according to some exemplary embodiments of the presentdisclosure.

FIG. 2B is a schematic cross-sectional view of the package structuredepicted in FIG. 2A.

FIG. 2C is a schematic explosive view illustrating the package structuredepicted in FIG. 2A.

FIG. 3A is a schematic three-dimensional side-view diagram of a packagestructure according to some exemplary embodiments of the presentdisclosure.

FIG. 3B is a schematic cross-sectional view of the package structuredepicted in FIG. 3A.

FIG. 3C is a schematic explosive view illustrating the package structuredepicted in FIG. 3A.

FIG. 4A is a schematic three-dimensional side-view diagram of a packagestructure according to some exemplary embodiments of the presentdisclosure.

FIG. 4B is a schematic cross-sectional view of the package structuredepicted in FIG. 4A.

FIG. 4C is a schematic explosive view illustrating the package structuredepicted in FIG. 4A.

FIG. 5A is a schematic three-dimensional side-view diagram of a packagestructure according to some exemplary embodiments of the presentdisclosure.

FIG. 5B is a schematic cross-sectional view of the package structuredepicted in FIG. 5A.

FIG. 5C is a schematic explosive view illustrating the package structuredepicted in FIG. 5A.

DETAILED DESCRIPTION

The following disclosure provides many different embodiments, orexamples, for implementing different features of the provided subjectmatter. Specific examples of components, values, operations, materials,arrangements, or the like, are described below to simplify the presentdisclosure. These are, of course, merely examples and are not intendedto be limiting. Other components, values, operations, materials,arrangements, or the like, are contemplated. For example, the formationof a first feature over or on a second feature in the description thatfollows may include embodiments in which the first and second featuresare formed in direct contact, and may also include embodiments in whichadditional features may be formed between the first and second features,such that the first and second features may not be in direct contact. Inaddition, the present disclosure may repeat reference numerals and/orletters in the various examples. This repetition is for the purpose ofsimplicity and clarity and does not in itself dictate a relationshipbetween the various embodiments and/or configurations discussed.

Further, spatially relative terms, such as “beneath,” “below,” “lower,”“above,” “upper” and the like, may be used herein for ease ofdescription to describe one element or feature's relationship to anotherelement(s) or feature(s) as illustrated in the figures. The spatiallyrelative terms are intended to encompass different orientations of thedevice in use or operation in addition to the orientation depicted inthe figures. The apparatus may be otherwise oriented (rotated 90 degreesor at other orientations) and the spatially relative descriptors usedherein may likewise be interpreted accordingly.

In addition, terms, such as “first,” “second,” “third,” “fourth,”“fifth,” and the like, may be used herein for ease of description todescribe similar or different element(s) or feature(s) as illustrated inthe figures, and may be used interchangeably depending on the order ofthe presence or the contexts of the description.

Other features and processes may also be included. For example, testingstructures may be included to aid in the verification testing of the 3Dpackaging or 3DIC devices. The testing structures may include, forexample, test pads formed in a redistribution layer or on a substratethat allows the testing of the 3D packaging or 3DIC, the use of probesand/or probe cards, and the like. The verification testing may beperformed on intermediate structures as well as the final structure.Additionally, the structures and methods disclosed herein may be used inconjunction with testing methodologies that incorporate intermediateverification of known good dies to increase the yield and decreasecosts.

FIG. 1A is a schematic three-dimensional side-view diagram of a packagestructure according to some exemplary embodiments of the presentdisclosure. FIG. 1B is a schematic cross-sectional view of the packagestructure depicted in FIG. 1A. FIG. 1C is a schematic explosive viewillustrating the package structure depicted in FIG. 1A. FIG. 1B is theschematic cross sectional view taken along a section line A-A′ depictedin FIG. 1C. Some components shown in FIG. 1B is omitted in FIG. 1A andFIG. 1C to show concise, schematic explosive views. The embodiments areintended to provide further explanations but are not used to limit thescope of the present disclosure. In FIG. 1A to FIG. 1C, only one die,three first antennas and three second antennas are presented forillustrative purposes; however, it should be noted that one or moredies, one or more first antennas, and one or more second antennas may beprovided.

Referring to FIG. 1A, FIG. 1B and FIG. 1C, in some embodiments, apackage structure 10 includes a redistribution structure 110, at leastone through interlayer via (TIV) 120, a semiconductor die 130, aninsulating encapsulation 140, a first isolation layer 152, a secondisolation layer 154, first antennas 160 a, second antennas 160 b, andconductive elements 180. As shown in FIG. 1A to FIG. 1C, in someembodiments, the semiconductor die 130, the first antennas 160 a, andthe second antennas 160 b are at different levels and are encapsulatedin the insulating encapsulation 140. In some embodiments, from bottom totop (e.g., along a direction Z), the stacking order is, for example, thesemiconductor die 130, the second antennas 160 b, and the first antennas160 a.

Referring to FIG. 1A and FIG. 1B, in some embodiments, the insulatingencapsulation 140 includes a first portion 142, a second portion 144,and a third portion 146, where the second portion 144 is sandwichedbetween the first portion 142 and the third portion 146. In someembodiments, the semiconductor die 130 is encapsulated in the firstportion 142 of the insulating encapsulation 140, the first antennas 160a are encapsulated in the third portion 146 of the insulatingencapsulation 140, and the second antennas 160 b are encapsulated in thesecond portion 144 of the insulation encapsulation 140. The insulatingencapsulation 140 includes, for example, an epoxy resin, or any othersuitable type of encapsulating material, where the disclosure is notlimited thereto. Depending on the frequency range of the antennaapplications, suitable materials of the insulating encapsulation 140 maybe selected based on the required electrical properties of the packagestructure. In certain embodiments, the materials of the first portion142, the second portion 144 and the third portion 146 of the insulatingencapsulation 140 may be the same. However, in an alternativeembodiment, the materials of the first portion 142, the second portion144 and the third portion 146 of the insulating encapsulation 140 may bedifferent. The disclosure is not limited thereto.

Referring to FIG. 1B, in some embodiments, the semiconductor die 130includes an active surface 130 a, a plurality of pads 130 b distributedon the active surface 130 a, a passivation layer 130 c covering theactive surface 130 a and a portion of the pad 130 b, a plurality ofconductive pillars 130 d connecting to the pads 130 b, a dielectriclayer 130 e, and a backside surface 130 f opposite to the active surface130 a. The pads 130 b are partially exposed by the passivation layer 130c, the conductive pillars 130 d are disposed on and electricallyconnected to the pads 130 b, and the dielectric layer 130 e covers thepassivation layer 130 c and exposes the conductive pillars 130 d. Thepads 130 b may be aluminum pads or other suitable metal pads, forexample. The conductive pillars 130 d may be copper pillars, copperalloy pillars or other suitable metal pillars, for example. In someembodiments, the passivation layer 130 c and the dielectric layer 130 emay be a polybenzoxazole (PBO) layer, a polyimide (PI) layer or othersuitable polymer layers. In some alternative embodiments, thepassivation layer 130 c and the dielectric layer 130 e may be made ofinorganic materials, such as silicon oxide, silicon nitride, siliconoxynitride, or any suitable dielectric material. The material of thepassivation layer 130 c can be the same or different from the materialof the dielectric layer 130 e, for example. In an alternativeembodiment, the semiconductor die 130 may include the pads 130 bdistributed on the active surface 130 a, the passivation layer 130 ccovering the active surface 130 a and a portion of the pad 130 b, thebackside surface 130 f opposite to the active surface 130 a, where theconductive pillars 130 d and the dielectric layer 130 e may be omitted.As shown in FIG. 1A to FIG. 1C, only one semiconductor die is presentedfor illustrative purposes, however, it should be noted that one or moresemiconductor dies may be provided. In some embodiments, thesemiconductor die 130 described herein may be referred as a chip or anintegrated circuit (IC). In certain embodiments, the semiconductor die130 may further include additional chip(s) of the same type or differenttypes. For example, in an alternative embodiment, more than onesemiconductor die 130 is provided, and the semiconductor dies 130,except for including at least one wireless and RF chip, may include thesame or different types of chips selected from digital chips, analogchips, mixed signal chips, application-specific integrated circuit(“ASIC”) chips, sensor chips, memory chips, logic chips or voltageregulator chips.

Referring to FIG. 1B, in some embodiments, the first isolation layer 152and the redistribution structure 110 are located at two opposite sidesof the semiconductor die 130. The first isolation layer 152 issandwiched between the first portion 142 of the insulating encapsulation140 and the second portion 144 of the insulating encapsulation 140. Insome embodiments, the first isolation layer 152 is located between afirst polymer dielectric layer PD1 and a second polymer dielectric layerPD2. The first polymer dielectric layer PD1, the first isolation layer152 and the second polymer dielectric layer PD2 are sequentially stackedone over another, and are located between the first portion 142 of theinsulating encapsulation 140 and the second portion 144 of theinsulating encapsulation 140. In some embodiments, the first polymerdielectric layer PD1 is located between the first isolation layer 152and the first portion 142 of the insulating encapsulation 140, while thesecond polymer dielectric layer PD2 is located between the secondportion 144 of the insulating encapsulation 140 and the first isolationlayer 152. The disclosure is not limited thereto, for example, in oneembodiment, the first polymer dielectric layer PD1 may be optionallyomitted. In an alternative embodiment, the second polymer dielectriclayer PD2 may be optionally omitted. In some embodiments, the materialof the first isolation layer 152 may include aluminum, titanium, copper,nickel, tungsten, and/or alloys thereof. In some embodiments, thematerials of the first polymer dielectric layer PD1 and the secondpolymer dielectric layer PD2 may include polyimide, benzocyclobutene(BCB), polybenzooxazole (PBO), or any other suitable polymer-baseddielectric material. In one embodiment, the material of the firstpolymer dielectric layer PD1 may be the same as the material of thesecond polymer dielectric layer PD2. In an alternative embodiment, thematerial of the first polymer dielectric layer PD1 may be different fromthe material of the second polymer dielectric layer PD2.

In certain embodiments, a die attach film DA is provided between thebackside surface 130 f of the semiconductor die 130 and the firstpolymer dielectric layer PD1, as shown in FIG. 1B. In some embodiments,due to the die attach film DA provided between the semiconductor die 130and the first polymer dielectric layer PD1, the semiconductor die 130 isstably adhered to the first polymer dielectric layer PD1.

Referring to FIG. 1B, in some embodiments, the redistribution structure110 includes one or more metallization layers and one or morepolymer-based dielectric layers. As seen in FIG. 1B, the redistributionstructure 110 includes a first polymer dielectric material layer 112 a,a first metallization layer 114 a, a second polymer dielectric materiallayer 112 b, a second metallization layer 114 b, and a third polymerdielectric material layer 112 c. The first metallization layer 114 a issandwiched between the second polymer dielectric material layer 112 band the first polymer dielectric material layer 112 a, and the secondmetallization layer 114 b is sandwiched between the third polymerdielectric material layer 112 c and the second polymer dielectricmaterial layer 112 b. In certain embodiments, a top surface of the firstmetallization layers 114 a is exposed by the first polymer dielectricmaterial layers 112 a, and a bottom surface of the second metallizationlayers 114 b is exposed by the third polymer dielectric material layers112 c.

In some embodiments, the active surface 130 a of the semiconductor die130 faces the redistribution structure 110, and the backside surface 130f of the semiconductor die 130 faces the first isolation layer 152. Inone embodiment, the exposed top surface of the first metallization layer114 a is connected to the conductive pillars 130 d located on the activesurface 130 a of the semiconductor die 130 so as to electrically connectthe semiconductor die 130 to the redistribution structure 110, and theexposed bottom surface of the second metallization layer 114 b isconnected to the conductive elements 180. In an alternative embodiment,the exposed bottom surface of the second metallization layer 114 b isconnected to the conductive elements 180 (e.g., conductive balls, suchas solder balls) and semiconductor elements 190 (e.g., passivecomponents or active components according to the product requirements).As shown in FIG. 1B, the redistribution structure 110 is located betweenthe semiconductor die 130 and the conductive elements 180 and betweenthe semiconductor die 130 and semiconductor elements 190.

In some embodiments, the materials of the first metallization layer 114a and the second metallization layer 114 b may include aluminum,titanium, copper, nickel, tungsten, and/or alloys thereof. In someembodiments, the materials of the first polymer dielectric materiallayers 112 a, the second polymer dielectric material layers 112 b andthe third polymer dielectric material layer 112 c may include polyimide,benzocyclobutene (BCB), polybenzooxazole (PBO), or any other suitablepolymer-based dielectric material. It should be noted that theredistribution structure 110 is not limited to include three polymerdielectric material layers and/or two metallization layers, i.e., thenumber of dielectric layer(s) and/or metallization layer(s) is notlimited to what is disclosed herein according to the present disclosure.

In certain embodiments, a plurality of under-ball metallurgy (UBM)patterns u1, u2 are formed on the exposed bottom surface of the secondmetallization layers 114 b of the redistribution structure 110 forelectrically connecting with the conductive elements 180 and/or thesemiconductor elements 190, respectively. As shown in FIG. 1B, forexample, the under-ball metallurgy patterns u1 are located between theconductive elements 180 and the exposed bottom surface of the secondmetallization layers 114 b, and the under-ball metallurgy patterns u2are located between the semiconductor elements 190 and the exposedbottom surface of the second metallization layers 114 b, however, thedisclosure is not limited thereto. Due to the under-ball metallurgypatterns u1 and u2 are formed on the exposed bottom surface of thesecond metallization layers 114 b of the redistribution structure 110,the later-formed conductive elements 180 and/or the semiconductorelements 190 can be accurately located on the under-ball metallurgypatterns u1 and u2 with better fixation, and the ball drop yield andreliability of the package structure 10 are improved. In someembodiments, the under-ball metallurgy patterns u1 and u2 may includecopper, nickel, titanium, a combination thereof or the like, and areformed by, e.g., an electroplating process.

Referring to FIG. 1B, in some embodiments, the second isolation layer154 is sandwiched between the third portion 146 of the insulatingencapsulation 140 and the second portion 144 of the insulatingencapsulation 140. In some embodiments, the second isolation layer 154is located between a third polymer dielectric layer PD3 and a fourthpolymer dielectric layer PD4. The third polymer dielectric layer PD3,the second isolation layer 154 and the fourth polymer dielectric layerPD4 are sequentially stacked one over another, and are located betweenthe third portion 146 of the insulating encapsulation 140 and the secondportion 144 of the insulating encapsulation 140. In some embodiments,the third polymer dielectric layer PD3 is located between the secondisolation layer 154 and the second portion 144 of the insulatingencapsulation 140, while the fourth polymer dielectric layer PD4 islocated between the third portion 146 of the insulating encapsulation140 and the second isolation layer 154. The disclosure is not limitedthereto, for example, in one embodiment, the third polymer dielectriclayer PD3 may be optionally omitted. In an alternative embodiment, thefourth polymer dielectric layer PD4 may be optionally omitted. In someembodiments, the material of the second isolation layer 154 may includealuminum, titanium, copper, nickel, tungsten, and/or alloys thereof. Insome embodiments, the materials of the third polymer dielectric layerPD3 and the fourth polymer dielectric layer PD4 may include polyimide,benzocyclobutene (BCB), polybenzooxazole (PBO), or any other suitablepolymer-based dielectric material. In one embodiment, the material ofthe third polymer dielectric layer PD3 may be the same as the materialof the fourth polymer dielectric layer PD4. In an alternativeembodiment, the material of the third polymer dielectric layer PD3 maybe different from the material of the fourth polymer dielectric layerPD4.

In certain embodiments, the materials of the first isolation layer 152and the second isolation layer 154 may be the same or different. Incertain embodiments, the materials of the first polymer dielectric layerPD1, the second polymer dielectric layer PD2, the third polymerdielectric layer PD3 and the fourth polymer dielectric layer PD4 may bethe same or different. The disclosure is not limited thereto. The firstisolation layer 152 and the second isolation layer 154 function asshielding layers of an electric signal or radiating wave to prevent thesemiconductor die 130 being affected by either the first antennas 160 aor the second antennas 160 b and/or to prevent the first antennas 160 aor the second antennas 160 b being affected by each other or by thesemiconductor die 130. Furthermore, in some embodiments, the firstisolation layer 152 and the second isolation layer 154 may includeisolation layers having patterns, where portions of each of the firstisolation layer 152 and the second isolation layer 154 are electricallyconnected to the semiconductor die 130 and serve as signal patterns, andother portions of each of the first isolation layer 152 and the secondisolation layer 154 are electrically isolated to the semiconductor die130 and serve as antenna ground.

Referring to FIG. 1B, in some embodiments, the at least one TIV 120includes a first TIV 122 and a second TIV 124. In some embodiments, thefirst TIV 122 and the second TIV 124 may be through integrated fan-out(InFO) vias. For simplification, only one first TIV 122 and one secondTIV 124 are presented for illustrative purposes, however, it should benoted that more than two first TIV and/or second TIV may be formed; thedisclosure is not limited thereto. The numbers of the first TIV 122 andthe second TIV 124 can be selected based on the demand.

In some embodiments, the first TIV 122 is encapsulated in the firstportion 142 of the insulating encapsulation 140. In some embodiments, afirst end 122 a of the first TIV 122 is connected to the exposed topsurface of the first metallization layer 114 a of the redistributionstructure 110 so as to electrically connect to the semiconductor die130, and a second end 122 b of the first TIV 122 is connected to thefirst isolation layer 152 exposed by an opening O1 of the first polymerdielectric layer PD1, where the first end 122 a is opposite to thesecond end 122 b. In some embodiments, the second TIV 124 isencapsulated in the second portion 144 of the insulating encapsulation140. In some embodiments, as shown in FIG. 1B, a first end 124 a of thesecond TIV 124 is connected to the first isolation layer 152 exposed byan opening O2 of the second polymer dielectric layer PD2 so as toelectrically connect to the first isolation layer 152, and a second end124 b of the second TIV 124 is connected to the second isolation layer154 exposed by an opening O3 of the third polymer dielectric layer PD3,where the first end 124 a is opposite to the second end 124 b. Incertain embodiments, the first TIV 122 and the second TIV 124 areelectrically connected to the redistribution structure 110. As shown inFIG. 1B, the first TIV 122 is electrically connected to thesemiconductor die 130 through the redistribution structure 110, and thesecond TIV 124 is electrically connected to the semiconductor die 130through the first isolation layer 152, the first TIV 122, and theredistribution structure 110. In one embodiment, the material of thefirst TIV 122 and the second TIV 124 may include a metal material suchas copper or copper alloys, or the like.

Referring to FIG. 1C, in some embodiments, each of the first antennas160 a include a first reflector 162 a, a pair of first drivers 164 a,and first directors 166 a. As shown in FIG. 1B, in some embodiments, thefirst reflector 162 a and the first drivers 164 a of each first antenna160 a are respectively connected to the second isolation layer 154exposed by an opening O5 and an opening O6 of the fourth polymerdielectric layer PD4 so as to electrically connect to the secondisolation layer 154. In other words, the first antennas 160 a areelectrically connected to the semiconductor die 130 through the secondisolation layer 154, the second TIV 124, the first isolation layer 152,the first TIV 122, and the redistribution structure 110. In someembodiments, the first antennas 160 a generate an electromagnetic wave(such as microwaves) propagating along a first direction X, where thefirst reflector 162 a, the first drivers 164 a, and the first directors166 a are sequentially arranged along the first direction X and areseparated apart from each other. The first drivers 164 a are arranged inparallel along a second direction Y and are located between the firstreflector 162 a and the first directors 166 a along the first directionX, where the first direction X is different from the second direction Y.In other words, as the first reflector 162 a and the first drivers 164 aare connected to the second isolation layer 154, and the first drivers164 a are located between the first reflector 162 a and the firstdirectors 166 a along the first direction X (which is a propagatingdirection of the electromagnetic wave generated by the first antennas160 a), where the first reflectors 162 a and the first drivers 164 a areoverlapped with the second isolation layer 154 along the direction Z. Inother words, the first reflectors 162 a and the first drivers 164 astand on the second isolation layer 154, for example. In certainembodiments, the first direction X is perpendicular to the seconddirection Y, as shown in FIG. 1C. In certain embodiments, the directionZ is perpendicular to the first direction X and the second direction Y,as shown in FIG. 1C. In some embodiments, as shown in FIG. 1C, threefirst directors 166 a are included in one first antenna 160 a; however,the disclosure is not limited. In an alternative embodiment, the numberof the first directors 166 a may be one.

Referring to FIG. 1C, in some embodiments, each of the second antennas160 b includes a second reflector 162 b, a pair of second drivers 164 b,and second directors 166 b. As shown in FIG. 1B, in some embodiments,the second reflector 162 b and the second drivers 164 b of each secondantenna 160 b are connected to the first isolation layer 152 exposed byan opening O4 of the second polymer dielectric layer PD2 so as toelectrically connect to the first isolation layer 152. In other words,the second antennas 160 b are electrically connected to thesemiconductor die 130 through the first isolation layer 152, the firstTIV 122, and the redistribution structure 110. In some embodiments, thesecond antennas 160 b generate an electromagnetic wave (such asmicrowaves) propagating along the second direction Y, where the secondreflector 162 b, the second drivers 164 b, and the second directors 166b are sequentially arranged along the second direction Y and areseparated apart from each other. The second drivers 164 b are arrangedin parallel along the first direction X and are located between thesecond reflector 162 b and the second directors 166 b along the seconddirection Y. In other words, the second reflector 162 b and the seconddrivers 164 b are connected to the first isolation layer 152, and thesecond drivers 164 b are located between the second reflector 162 b andthe second directors 166 b along the second direction Y (which is apropagating direction of the electromagnetic wave generated by thesecond antennas 160 b), where the second reflectors 162 b and the seconddrivers 164 b are overlapped with the first isolation layer 152 alongthe direction Z. In some embodiments, as shown in FIG. 1C, three seconddirectors 166 b are included in one second antenna 160 b; however, thedisclosure is not limited. In an alternative embodiment, the number ofthe second directors 166 b may be one, less than three or more thanthree.

In some embodiments, the first antennas 160 a and the second antennas160 b are configured as Yagi-Uda antennas. In some embodiments, thefirst antennas 160 a and the second antennas 160 b may be end-fireantennas or polarized end-fire antennas (such as horizontal polarizedend-fire antennas as shown in FIG. 1C or vertical polarized end-fireantennas (not shown)), but the disclosure is not limited thereto. In oneembodiment, the first antennas 160 a and the second antennas 160 b mayhave the same structure or different structures. Owing to suchconfiguration, the first antennas 160 a and the second antennas 160 bare capable of generating electromagnetic waves according to electricsignals transmitted from the semiconductor die 130 and/or receivingelectromagnetic waves to be processed by the semiconductor die 130. Insome embodiments, the first antennas 160 a and the second antennas 160 bmay also be employed to receive electromagnetic waves. That is to say,the first antennas 160 a and the second antennas 160 b may be configuredto generate electromagnetic waves in a first time period, and then thefirst antennas 160 a and the second antennas 160 b may be re-assigned tobe configured to receive electromagnetic waves in a second time period.Owing to the first antennas 160 a and the second antennas 160 b, acoverage range of the electromagnetic waves generated from the packagestructure 10 is increased, and thus the efficiency of the antennaapplication of the package structure 10 is enhanced. In an alternativeembodiment, the first antennas 160 a may be configured to generateelectromagnetic waves while the second antenna 160 b may be configuredto receive electromagnetic waves, or vice versa.

FIG. 2A is a schematic three-dimensional side-view diagram of a packagestructure according to some exemplary embodiments of the presentdisclosure. FIG. 2B is a schematic cross-sectional view of the packagestructure depicted in FIG. 2A. FIG. 2C is a schematic explosive viewillustrating the package structure depicted in FIG. 2A. FIG. 2B is theschematic cross sectional view taken along a section line B-B′ depictedin FIG. 2C. Some components shown in FIG. 2B is omitted in FIG. 2A andFIG. 2C to show concise, schematic explosive views. The embodiments areintended to provide further explanations but are not used to limit thescope of the present disclosure. In FIG. 2A to FIG. 2C, only one die,four first antennas and four second antennas are presented forillustrative purposes; however, it should be noted that one or moredies, one or more first antennas, and one or more second antennas may beprovided.

Referring to FIG. 1A to FIG. 1C and FIG. 2A to FIG. 2C together, thepackage structure 10 depicted in FIG. 1A to FIG. 1C and the packagestructure 20 depicted in FIG. 2A to FIG. 2C has elements similar to orsubstantially the same, the elements depicted in FIG. 2A to FIG. 2Csimilar to or substantially the same as the elements described above inFIG. 1A to FIG. 1C will use the same reference numbers, and certaindetails or descriptions of the same elements will not be repeatedherein, for simplicity.

Referring to FIG. 2A, FIG. 2B and FIG. 2C, in some embodiments, apackage structure 20 includes a redistribution structure 110, at leastone TIV 120, a semiconductor die 130, an insulating encapsulation 140, afirst isolation layer 152, first antennas 160 a, second antennas 160 b,a first through interlayer via (TIV) wall 172, a second TIV wall 174,and conductive elements 180.

Referring to FIG. 2A and FIG. 2B, in some embodiments, the insulatingencapsulation 140 includes a first portion 142 and a second portion 144.In some embodiments, the semiconductor die 130, a portion of the firstantennas 160 a and a portion of the second antennas 160 b areencapsulated in the first portion 142 of the insulating encapsulation140, and another portion of the first antennas 160 a and another portionof the second antennas 160 b are encapsulated in the second portion 144of the insulation encapsulation 140.

Referring to FIG. 2B, in some embodiments, the semiconductor die 130includes an active surface 130 a, a plurality of pads 130 b distributedon the active surface 130 a, a passivation layer 130 c covering theactive surface 130 a and a portion of the pad 130 b, a plurality ofconductive pillars 130 d connecting to the pads 130 b, a dielectriclayer 130 e, and the backside surface 130 f opposite to the activesurface 130 a. The pads 130 b are partially exposed by the passivationlayer 130 c, the conductive pillars 130 d are disposed on andelectrically connected to the pads 130 b, and the dielectric layer 130 ecovers the passivation layer 130 c and exposes the conductive pillars130 d. In an alternative embodiment, the semiconductor die 130 mayinclude the pads 130 b distributed on the active surface 130 a, thepassivation layer 130 c covering the active surface 130 a and a portionof the pad 130 b, the backside surface 130 f opposite to the activesurface 130 a, where the conductive pillars 130 d and the dielectriclayer 130 e may be omitted. As shown in FIG. 2A to FIG. 2C, only onesemiconductor die is presented for illustrative purposes, however, itshould be noted that one or more semiconductor dies may be provided.

Referring to FIG. 2B, in some embodiments, the first isolation layer 152and the redistribution structure 110 are located at two opposite sidesof the semiconductor die 130. The first isolation layer 152 issandwiched between the first portion 142 of the insulating encapsulation140 and the second portion 144 of the insulating encapsulation 140. Insome embodiments, the first isolation layer 152 is located between afirst polymer dielectric layer PD1 and a second polymer dielectric layerPD2. The first polymer dielectric layer PD1, the first isolation layer152 and the second polymer dielectric layer PD2 are sequentially stackedone over another, and are located between the first portion 142 of theinsulating encapsulation 140 and the second portion 144 of theinsulating encapsulation 140. In some embodiments, the first polymerdielectric layer PD1 is located between the first isolation layer 152and the first portion 142 of the insulating encapsulation 140, while thesecond polymer dielectric layer PD2 is located between the secondportion 144 of the insulating encapsulation 140 and the first isolationlayer 152. The disclosure is not limited thereto, for example, in oneembodiment, the first polymer dielectric layer PD1 may be optionallyomitted. In an alternative embodiment, the second polymer dielectriclayer PD2 may be optionally omitted. The first isolation layer 152functions as a shielding layer of an electric signal or radiating waveto prevent the semiconductor die 130 being affected by either the firstantennas 160 a and/or the second antennas 160 b and/or to prevent thefirst antennas 160 a or the second antennas 160 b being affected by eachother or by the semiconductor die 130. Furthermore, in some embodiments,the first isolation layer 152 may include an isolation layer havingpatterns, where portions of the first isolation layer 152 areelectrically connected to the semiconductor die 130 and serve as signalpatterns, and other portions of the first isolation layer 152 areelectrically isolated to the semiconductor die 130 and serve as antennaground.

In certain embodiments, a die attach film DA is provided between thebackside surface 130 f of the semiconductor die 130 and the firstpolymer dielectric layer PD1, as shown in FIG. 2B. In some embodiments,due to the die attach film DA provided between the semiconductor die 130and the first polymer dielectric layer PD1, the semiconductor die 130 isstably adhered to the first polymer dielectric layer PD1.

Referring to FIG. 2B, in some embodiments, the redistribution structure110 includes one or more metallization layers and one or morepolymer-based dielectric layers. In some embodiments, the redistributionstructure 110 includes a first polymer dielectric material layer 112 a,a first metallization layer 114 a, a second polymer dielectric materiallayer 112 b, a second metallization layer 114 b, and a third polymerdielectric material layer 112 c. The first metallization layer 114 a issandwiched between the second polymer dielectric material layer 112 band the first polymer dielectric material layer 112 a, and the secondmetallization layer 114 b is sandwiched between the third polymerdielectric material layer 112 c and the second polymer dielectricmaterial layer 112 b. In certain embodiments, a top surface of the firstmetallization layers 114 a is exposed by the first polymer dielectricmaterial layers 112 a, and a bottom surface of the second metallizationlayers 114 b is exposed by the third polymer dielectric material layers112 c. It should be noted that the redistribution structure 110 is notlimited to include three polymer dielectric material layers and/or twometallization layers, i.e., the number of dielectric layer(s) and/ormetallization layer(s) is not limited to what is disclosed hereinaccording to the present disclosure.

In some embodiments, the exposed top surface of the first metallizationlayer 114 a is connected to the conductive pillars 130 d located on theactive surface 130 a of the semiconductor die 130 so as to electricallyconnect the semiconductor die 130 to the redistribution structure 110,and the exposed bottom surface of the second metallization layer 114 bis connected to the conductive elements 180. In an alternativeembodiment, the exposed bottom surface of the second metallization layer114 b is connected to the conductive elements 180 and the semiconductorelements 190. As shown in FIG. 2B, the redistribution structure 110 islocated between the semiconductor die 130 and the conductive elements180, and between the semiconductor die 130 and the semiconductorelements 190.

In certain embodiments, a plurality of under-ball metallurgy (UBM)patterns u1, u2 is formed on the exposed bottom surface of the secondmetallization layers 114 b of the redistribution structure 110 forelectrically connecting with the conductive elements 180 and/or thesemiconductor elements 190, respectively. As shown in FIG. 2B, forexample, the under-ball metallurgy patterns u1 are located between theconductive elements 180 and the exposed bottom surface of the secondmetallization layers 114 b, and the under-ball metallurgy patterns u2are located between the semiconductor elements 190 and the exposedbottom surface of the second metallization layers 114 b, however, thedisclosure is not limited thereto. Due to the under-ball metallurgypatterns u1 and u2 are formed on the exposed bottom surface of thesecond metallization layers 114 b of the redistribution structure 110,the later-formed conductive elements 180 and/or the semiconductorelements 190 can be accurately located on the under-ball metallurgypatterns u1 and u2 with better fixation, and the ball drop yield andreliability of the package structure 20 are improved.

Referring to FIG. 2B, in some embodiments, the at least one TIV 120includes a first TIV 122. In some embodiments, the first TIV 122 is athrough integrated fan-out (InFO) via. For simplification, only onefirst TIV 122 is presented for illustrative purposes, however, it shouldbe noted that more than two first TIV may be formed; the disclosure isnot limited thereto. The number of the first TIV 122 can be selectedbased on the demand.

In some embodiments, the first TIV 122 is encapsulated in the firstportion 142 of the insulating encapsulation 140. In some embodiments, afirst end 122 a of the first TIV 122 is connected to the exposed topsurface of the first metallization layer 114 a of the redistributionstructure 110 so as to electrically connect to the semiconductor die130, and a second end 122 b of the first TIV 122 is connected to thefirst isolation layer 152 exposed by an opening O1 of the first polymerdielectric layer PD1, where the first end 122 a is opposite to thesecond end 122 b. As shown in FIG. 2B, for example, the first TIV 122 iselectrically connected to the semiconductor die 130 through theredistribution structure 110.

Referring to FIG. 2C, in some embodiments, each of the first antennas160 a includes a first reflector 162 a, a pair of first drivers 164 a,and first directors 166 a. In some embodiments, the first reflector 162a and the first drivers 164 a of each of the first antennas 160 aencapsulated in the first portion 142 of the insulating encapsulation140 are connected to the exposed top surface of the first metallizationlayer 114 a of the redistribution structure 110. In other words, thefirst antennas 160 a encapsulated in the first portion 142 of theinsulating encapsulation 140 are electrically connected to thesemiconductor die 130 through the redistribution structure 110. In someembodiments, the first reflector 162 a and the first drivers 164 a ofeach of the first antennas 160 a encapsulated in the second portion 144of the insulating encapsulation 140 are connected to the first isolationlayer 152 exposed by an opening O2 of the second polymer dielectriclayer PD2. In other words, the first antennas 160 a encapsulated in thesecond portion 144 of the insulating encapsulation 140 are electricallyconnected to the semiconductor die 130 through the first isolation layer152, the first TIV 122, and the redistribution structure 110.

In some embodiments, the first antennas 160 a encapsulated in the firstportion 142 of the insulating encapsulation 140 generate anelectromagnetic wave (such as microwaves) propagating along the firstdirection X. For the first antennas 160 a encapsulated in the firstportion 142 of the insulating encapsulation 140, the first reflector 162a, the first drivers 164 a, and the first directors 166 a of the firstantennas 160 a encapsulated in the first portion 142 of the insulatingencapsulation 140 are sequentially arranged along the first direction Xand are separated apart from each other. The first drivers 164 a arearranged in parallel along the second direction Y and are locatedbetween the first reflector 162 a and the first directors 166 a alongthe first direction X. In other words, for each first antenna 160 aencapsulated in the first portion 142 of the insulating encapsulation140, the first reflector 162 a and the first drivers 164 a are connectedto the redistribution structure 110, and the first drivers 164 a arelocated between the first reflector 162 a and the first directors 166 aalong the first direction X (which is a propagating direction of theelectromagnetic wave generated by the first antennas 160 a encapsulatedin the first portion 142 of the insulating encapsulation 140), where thefirst reflector 162 a and the first drivers 164 a are overlapped withthe redistribution structure 110 along the direction Z. In other words,the first reflectors 162 a and the first drivers 164 a of the firstantennas 160 a encapsulated in the first portion 142 stand on theredistribution structure 110, for example.

On the other hand, the first antennas 160 a encapsulated in the secondportion 144 of the insulating encapsulation 140 generate anelectromagnetic wave (such as microwaves) propagating along a directionX′, where the direction X′ is opposite to the first direction X. Thefirst reflector 162 a, the first drivers 164 a, and the first directors166 a of the first antennas 160 a encapsulated in the second portion 144of the insulating encapsulation 140 are sequentially arranged along thedirection X′, and are separated apart from each other. For the firstantennas 160 a encapsulated in the second portion 144 of the insulatingencapsulation 140, the first drivers 164 a are arranged in parallelalong the second direction Y and are located between the first reflector162 a and the first directors 166 a along the direction X′. In otherwords, for each first antenna 160 a encapsulated in the second portion144 of the insulating encapsulation 140, the first reflector 162 a andthe first drivers 164 a are connected to the first isolation layer 152,and the first drivers 164 a are located between the first reflector 162a and the first directors 166 a along the direction X′ (which is apropagating direction of the electromagnetic wave generated by the firstantennas 160 a encapsulated in the second portion 144 of the insulatingencapsulation 140), where the first reflector 162 a and the firstdrivers 164 a are overlapped with the first isolation layer 152 alongthe direction Z. In other words, the first reflectors 162 a and thefirst drivers 164 a of the first antennas 160 a encapsulated in thesecond portion 144 stand on the first isolation layer 152, for example.In some embodiments, as shown in FIGS. 2A and 2C, two first directors166 a are included in one first antenna 160 a; however, the disclosureis not limited. In an alternative embodiment, the number of the firstdirectors 166 a may be less than two or more than two.

Referring to FIG. 2C, in some embodiments, each of the second antennas160 b includes a second reflector 162 b, a pair of second drivers 164 b,and second directors 166 b. In some embodiments, as shown in FIG. 2B,the second reflector 162 b and the second drivers 164 b of each of thesecond antennas 160 b encapsulated in the first portion 142 of theinsulating encapsulation 140 are connected to the exposed top surface ofthe first metallization layer 114 a of the redistribution structure 110.In other words, the second antennas 160 b encapsulated in the firstportion 142 of the insulating encapsulation 140 are electricallyconnected to the semiconductor die 130 through the redistributionstructure 110. In some embodiments, the second reflector 162 b and thesecond drivers 164 b of each of the second antenna 160 b encapsulated inthe second portion 144 of the insulating encapsulation 140 are connectedto the first isolation layer 152 exposed by an opening (not shown) ofthe second polymer dielectric layer PD2 so as to electrically connect tothe first isolation layer 152. In other words, the second antennas 160 bencapsulated in the second portion 144 of the insulating encapsulation140 are electrically connected to the semiconductor die 130 through thefirst isolation layer 152, the first TIV 122, and the redistributionstructure 110.

In some embodiments, the second antennas 160 b encapsulated in the firstportion 142 of the insulating encapsulation 140 generate anelectromagnetic wave (such as microwaves) propagating along the seconddirection Y, where the second reflector 162 b, the second drivers 164 b,and the second directors 166 b of the second antennas 160 b encapsulatedin the first portion 142 of the insulating encapsulation 140 aresequentially arranged along the second direction Y and are separatedapart from each other. For the second antennas 160 b encapsulated in thefirst portion 142 of the insulating encapsulation 140, the seconddrivers 164 b are arranged in parallel along the first direction X andare located between the second reflector 162 b and the second directors166 b along the second direction Y. In other words, for each secondantenna 160 b encapsulated in the first portion 142 of the insulatingencapsulation 140, the second reflector 162 b and the second drivers 164b are connected to the redistribution structure 110, and the seconddrivers 164 b are located between the second reflector 162 b and thesecond directors 166 b along the second direction Y (which is apropagating direction of the electromagnetic wave generated by thesecond antennas 160 b encapsulated in the first portion 142 of theinsulating encapsulation 140), where the second reflector 162 b and thesecond drivers 164 b are overlapped with the redistribution structure110 along the direction Z. In other words, the second reflector 162 band the second drivers 164 b of the second antennas 160 b encapsulatedin the first portion 142 stand on the redistribution structure 110, forexample.

On the other hand, the second antennas 160 b encapsulated in the secondportion 144 of the insulating encapsulation 140 generate anelectromagnetic wave (such as microwaves) propagating along a directionY′, where the direction Y′ is opposite to the second direction Y. Thesecond reflector 162 b, the second drivers 164 b, and the seconddirectors 166 b of the second antennas 160 b encapsulated in the secondportion 144 of the insulating encapsulation 140 are sequentiallyarranged along the direction Y′, and are separated apart from eachother. For the second antennas 160 b encapsulated in the second portion144 of the insulating encapsulation 140, the second drivers 164 b arearranged in parallel along the first direction X and are located betweenthe second reflector 162 b and the second directors 166 b along thedirection Y′. In other words, for each second antenna 160 b encapsulatedin the second portion 144 of the insulating encapsulation 140, thesecond reflector 162 b and the second drivers 164 b are connected to thefirst isolation layer 152, and the second drivers 164 b are locatedbetween the second reflector 162 b and the second directors 166 b alongthe direction Y′ (which is a propagating direction of theelectromagnetic wave generated by the second antennas 160 b encapsulatedin the second portion 144 of the insulating encapsulation 140), wherethe second reflector 162 b and the second drivers 164 b are overlappedwith the first isolation layer 152 along the direction Z. In otherwords, the second reflector 162 b and the second drivers 164 b of thesecond antennas 160 b encapsulated in the second portion 144 stand onthe first isolation layer 152, for example. In some embodiments, asshown in FIGS. 2A and 2C, two second directors 166 b are included in onesecond antenna 160 b; however, the disclosure is not limited. In analternative embodiment, the number of the second directors 166 b may beless than two or more than two.

In one embodiment, the first metallization layer 114 a and the secondmetallization layer 114 b of the redistribution structure 110 presentedimmediately below the first directors 166 a and/or second directors 166b may be optionally omitted to further prevent the first antennas 160 aand/or the second antenna 160 b being affected by the redistributionstructure 110. The disclosure is not limited thereto.

In some embodiments, the first antennas 160 a and the second antennas160 b are configured as Yagi-Uda antennas. In some embodiments, thefirst antennas 160 a and the second antennas 160 b may be end-fireantennas or polarized end-fire antennas (such as horizontal polarizedend-fire antennas as shown in FIG. 2C or vertical polarized end-fireantennas (not shown)), the disclosure is not limited thereto. In oneembodiment, the first antennas 160 a and the second antennas 160 b mayhave the same structure or different structures. Due to theconfiguration of the first antennas 160 a and the second antennas 160 bas shown in FIG. 2A to FIG. 2C, a coverage range of the electromagneticwaves generated from the package structure 20 is further increased, andthus the efficiency of the antenna application of the package structure20 is enhanced.

Referring to FIG. 2C, in some embodiments, the first TIV wall 172 isencapsulated in the first portion 142 of the insulating encapsulation140. In certain embodiments, the first TIV wall 172 is located betweenthe redistribution structure 110 and the first isolation layer 152. Thefirst TIV wall 172 is connected to the first reflector 162 a of one ofthe first antennas 160 a encapsulated in the first portion 142 of theinsulating encapsulation 140 and the second reflector 162 b of one ofthe second antennas 160 b encapsulated in the first portion 142 of theinsulating encapsulation 140. In some embodiments, the first TIV wall172 is connected to the first metallization layer 114 a of theredistribution structure 110 as shown in FIG. 2C. In some embodiments,the first antennas 160 a encapsulated in the first portion 142 of theinsulating encapsulation 140 and the second antennas 160 b encapsulatedin the first portion 142 of the insulating encapsulation 140 areseparated by the first TIV wall 172. Due to the presence of the firstTIV wall 172, the interference between the first antennas 160 aencapsulated in the first portion 142 of the insulating encapsulation140 and the second antennas 160 b encapsulated in the first portion 142of the insulating encapsulation 140 is suppressed.

In some embodiments, the second TIV wall 174 is encapsulated in thesecond portion 144 of the insulating encapsulation 140. In certainembodiments, the second TIV wall 174 is located on the first isolationlayer 152. The second TIV wall 174 is connected to the first reflector162 a of one of the first antennas 160 a encapsulated in the secondportion 144 of the insulating encapsulation 140 and the second reflector162 b of one of the second antennas 160 b encapsulated in the secondportion 144 of the insulating encapsulation 140. In some embodiments,the second TIV wall 174 is connected to the first isolation layer 152 asshown in FIG. 2B. In one embodiment, the first antennas 160 aencapsulated in the second portion 144 of the insulating encapsulation140 and the second antennas 160 b encapsulated in the second portion 144of the insulating encapsulation 140 are separated by the second TIV wall174. Due to the presence of the second TIV wall 174, the interferencebetween the first antennas 160 a encapsulated in the second portion 144of the insulating encapsulation 140 and the second antennas 160 bencapsulated in the second portion 144 of the insulating encapsulation140 is suppressed.

FIG. 3A is a schematic three-dimensional side-view diagram of a packagestructure according to some exemplary embodiments of the presentdisclosure. FIG. 3B is a schematic cross-sectional view of the packagestructure depicted in FIG. 3A. FIG. 3C is a schematic explosive viewillustrating the package structure depicted in FIG. 3A. FIG. 3B is theschematic cross sectional view taken along a section line C-C′ depictedin FIG. 3C. Some components shown in FIG. 3B is omitted in FIG. 3A andFIG. 3C to show concise, schematic explosive views. The embodiments areintended to provide further explanations but are not used to limit thescope of the present disclosure. In FIG. 3A to FIG. 3C, only one die,two first antennas, three second antennas are presented for illustrativepurposes; however, it should be noted that one or more dies, one or morefirst antennas, and one or more second antennas may be provided.

Referring to FIG. 1A to FIG. 1C and FIG. 3A to FIG. 3C together, thepackage structure 10 depicted in FIG. 1A to FIG. 1C and the packagestructure 30 depicted in FIG. 3A to FIG. 3C has elements similar to orsubstantially the same, the elements depicted in FIG. 3A to FIG. 3Csimilar to or substantially the same as the elements described above inFIG. 1A to FIG. 1C will use the same reference numbers, and certaindetails or descriptions of the same elements will not be repeatedherein, for simplicity.

Referring to FIG. 3A, FIG. 3B and FIG. 3C, in some embodiments, apackage structure 30 includes a redistribution structure 110, at leastone TIV 120, a semiconductor die 130, an insulating encapsulation 140, afirst isolation layer 152, a second isolation layer 154, first antennasincluding a first antenna component 160 a and a second antenna component160 b, and second antennas including a third antenna component 160 c, afourth antenna component 160 d and a fifth antenna component 160 e, andconductive elements 180.

Referring to FIG. 3A and FIG. 3B, in some embodiments, the insulatingencapsulation 140 includes a first portion 142, a second portion 144,and a third portion 146, where the second portion 144 is sandwichedbetween the first portion 142 and the third portion 146. In someembodiments, the semiconductor die 130 is encapsulated in the firstportion 142 of the insulating encapsulation 140, the first antennacomponent 160 a and the second antenna component 160 b are encapsulatedin the third portion 146 of the insulating encapsulation 140, and thethird antenna component 160 c, the fourth antenna component 160 d andthe fifth antenna component 160 e are encapsulated in the second portion144 of the insulation encapsulation 140.

Referring to FIG. 3B, in some embodiments, the semiconductor die 130includes an active surface 130 a, a plurality of pads 130 b distributedon the active surface 130 a, a passivation layer 130 c covering theactive surface 130 a and a portion of the pad 130 b, a plurality ofconductive pillars 130 d connecting to the pads 130 b, a dielectriclayer 130 e, and the backside surface 130 f opposite to the activesurface 130 a. The pads 130 b are partially exposed by the passivationlayer 130 c, the conductive pillars 130 d are disposed on andelectrically connected to the pads 130 b, and the dielectric layer 130 ecovers the passivation layer 130 c and exposes the conductive pillars130 d. In an alternative embodiment, the semiconductor die 130 mayinclude the pads 130 b distributed on the active surface 130 a, thepassivation layer 130 c covering the active surface 130 a and a portionof the pad 130 b, the backside surface 130 f opposite to the activesurface 130 a, where the conductive pillars 130 d and the dielectriclayer 130 e may be omitted. As shown in FIG. 3A to FIG. 3C, only onesemiconductor die is presented for illustrative purposes, however, itshould be noted that one or more semiconductor dies may be provided.

Referring to FIG. 3B, in some embodiments, the first isolation layer 152and the redistribution structure 110 are located at two opposite sidesof the semiconductor die 130. The first isolation layer 152 issandwiched between the first portion 142 of the insulating encapsulation140 and the second portion 144 of the insulating encapsulation 140. Insome embodiments, the first isolation layer 152 is located between afirst polymer dielectric layer PD1 and a second polymer dielectric layerPD2. The first polymer dielectric layer PD1, the first isolation layer152 and the second polymer dielectric layer PD2 are sequentially stackedone over another, and are located between the first portion 142 of theinsulating encapsulation 140 and the second portion 144 of theinsulating encapsulation 140. In some embodiments, the first polymerdielectric layer PD1 is located between the first isolation layer 152and the first portion 142 of the insulating encapsulation 140, while thesecond polymer dielectric layer PD2 is located between the secondportion 144 of the insulating encapsulation 140 and the first isolationlayer 152. The disclosure is not limited thereto, for example, in oneembodiment, the first polymer dielectric layer PD1 may be optionallyomitted. In an alternative embodiment, the second polymer dielectriclayer PD2 may be optionally omitted.

In certain embodiments, a die attach film DA is provided between thebackside surface 130 f of the semiconductor die 130 and the firstpolymer dielectric layer PD1, as shown in FIG. 3B. In some embodiments,due to the die attach film DA provided between the semiconductor die 130and the first polymer dielectric layer PD1, the semiconductor die 130 isstably adhered to the first polymer dielectric layer PD1.

Referring to FIG. 3B, in some embodiments, the redistribution structure110 includes one or more metallization layers and one or morepolymer-based dielectric layers. As seen in FIG. 3B, the redistributionstructure 110 includes a first polymer dielectric material layer 112 a,a first metallization layer 114 a, a second polymer dielectric materiallayer 112 b, a second metallization layer 114 b, and a third polymerdielectric material layer 112 c. The first metallization layer 114 a issandwiched between the second polymer dielectric material layer 112 band the first polymer dielectric material layer 112 a, and the secondmetallization layer 114 b is sandwiched between the third polymerdielectric material layer 112 c and the second polymer dielectricmaterial layer 112 b. In certain embodiments, a top surface of the firstmetallization layers 114 a is exposed by the first polymer dielectricmaterial layers 112 a, and a bottom surface of the second metallizationlayers 114 b is exposed by the third polymer dielectric material layers112 c. It should be noted that the redistribution structure 110 is notlimited to include three polymer dielectric material layers and/or twometallization layers, i.e., the number of dielectric layer(s) and/ormetallization layer(s) is not limited to what is disclosed hereinaccording to the present disclosure.

In one embodiment, the exposed top surface of the first metallizationlayer 114 a is connected to the conductive pillars 130 d located on theactive surface 130 a of the semiconductor die 130 so as to electricallyconnect the semiconductor die 130 to the redistribution structure 110,and the exposed bottom surface of the second metallization layer 114 bis connected to the conductive elements 180. In an alternativeembodiment, the exposed bottom surface of the second metallization layer114 b is connected to the conductive elements and semiconductor elements190. As shown in 3B, the redistribution structure 110 is located betweenthe semiconductor die 130 and the conductive elements 180, and betweenthe semiconductor die 130 and the semiconductor elements 190.

In certain embodiments, a plurality of under-ball metallurgy (UBM)patterns u1, u2 is formed on the exposed bottom surface of the secondmetallization layers 114 b of the redistribution structure 110 forelectrically connecting with the conductive elements 180 and/or thesemiconductor elements 190, respectively. As shown in FIG. 3B, forexample, the under-ball metallurgy patterns u1 are located between theconductive elements 180 and the exposed bottom surface of the secondmetallization layers 114 b, and the under-ball metallurgy patterns u2are located between the semiconductor elements 190 and the exposedbottom surface of the second metallization layers 114 b, however, thedisclosure is not limited thereto. Due to the under-ball metallurgypatterns u1 and u2 are formed on the exposed bottom surface of thesecond metallization layers 114 b of the redistribution structure 110,the later-formed conductive elements 180 and/or the semiconductorelements 190 can be accurately located on the under-ball metallurgypatterns u1 and u2 with better fixation, and the ball drop yield andreliability of the package structure 30 are improved.

Referring to FIG. 3B, in some embodiments, the second isolation layer154 is sandwiched between the third portion 146 of the insulatingencapsulation 140 and the second portion 144 of the insulatingencapsulation 140. In some embodiments, the second isolation layer 154is located between a third polymer dielectric layer PD3 and a fourthpolymer dielectric layer PD4. The third polymer dielectric layer PD3,the second isolation layer 154 and the fourth polymer dielectric layerPD4 are sequentially stacked one over another, and are located betweenthe third portion 146 of the insulating encapsulation 140 and the secondportion 144 of the insulating encapsulation 140. In some embodiments,the third polymer dielectric layer PD3 is located between the secondisolation layer 154 and the second portion 144 of the insulatingencapsulation 140, while the fourth polymer dielectric layer PD4 islocated between the third portion 146 of the insulating encapsulation140 and the second isolation layer 154. The disclosure is not limitedthereto, for example, in one embodiment, the third polymer dielectriclayer PD3 may be optionally omitted. In an alternative embodiment, thefourth polymer dielectric layer PD4 may be optionally omitted. The firstisolation layer 152 and the second isolation layer 154 function asshielding layers of an electric signal or radiating wave to prevent thesemiconductor die 130 being affected by either the first antennas or thesecond antennas and/or to prevent the first antennas or the secondantennas being affected by each other or by the semiconductor die 130.Furthermore, in some embodiments, the first isolation layer 152 and thesecond isolation layer 154 may include isolation layers having patterns,where portions of each of the first isolation layer 152 and the secondisolation layer 154 are electrically connected to the semiconductor die130 and serve as signal patterns, and other portions of each of thefirst isolation layer 152 and the second isolation layer 154 areelectrically isolated to the semiconductor die 130 and serve as antennaground.

Referring to FIG. 3B, in some embodiments, the at least one TIV 120includes a first TIV 122 and a second TIV 124. In some embodiments, thefirst TIV 122 and the second TIV 124 are through integrated fan-out(InFO) vias. For simplification, only one first TIV 122 and one secondTIV 124 are presented for illustrative purposes, however, it should benoted that more than two first TIV and/or second TIV may be formed; thedisclosure is not limited thereto. The numbers of the first TIV 122 andthe second TIV 124 can be selected based on the demand.

In some embodiments, the first TIV 122 is encapsulated in the firstportion 142 of the insulating encapsulation 140. In some embodiments, afirst end 122 a of the first TIV 122 is connected to the exposed topsurface of the first metallization layer 114 a of the redistributionstructure 110 so as to electrically connect to the semiconductor die130, and a second end 122 b of the first TIV 122 is connected to thefirst isolation layer 152 exposed by an opening O1 of the first polymerdielectric layer PD1, where the first end 122 a is opposite to thesecond end 122 b. In some embodiments, the second TIV 124 isencapsulated in the second portion 144 of the insulating encapsulation140. In some embodiments, as shown in FIG. 3B, a first end 124 a of thesecond TIV 124 is connected to the first isolation layer 152 exposed byan opening O2 of the second polymer dielectric layer PD2 so as toelectrically connect to the first isolation layer 152, and a second end124 b of the second TIV 124 is connected to the second isolation layer154 exposed by an opening O3 of the third polymer dielectric layer PD3,where the first end 124 a is opposite to the second end 124 b. Incertain embodiments, the first TIV 122 and the second TIV 124 areelectrically connected to the redistribution structure 110. As shown inFIG. 3B, for example, the first TIV 122 is electrically connected to thesemiconductor die 130 through the redistribution structure 110, and thesecond TIV 124 is electrically connected to the semiconductor die 130through the first isolation layer 152, the first TIV 122, and theredistribution structure 110.

Referring to FIG. 3C, in some embodiments, the first antennas includesone first antenna component 160 a and one second antenna component 160b, and the second antennas include one third antenna component 160 c,one fourth antenna component 160 d, and one fifth antenna component 160e. The numbers of the first, second, third, fourth and fifth antennacomponents 160 a-160 e are not limited to one, the numbers of the first,second, third, fourth and fifth antenna components 160 a-160 e may bemore than one, the disclosure is not limited thereto.

In some embodiments, the first antenna component 160 a includes a firstreflector 162 a, a pair of first drivers 164 a, and first directors 166a. In some embodiments, the first reflector 162 a and the first drivers164 a of the first antenna component 160 a are respectively connected tothe second isolation layer 154 exposed by an opening O4 and an openingO5 of the fourth polymer dielectric layer PD4 so as to electricallyconnect to the second isolation layer 154. In other words, the firstantenna component 160 a is electrically connected to the semiconductordie 130 through the second isolation layer 154, the second TIV 124, thefirst isolation layer 152, the first TIV 122, and the redistributionstructure 110. In some embodiments, the first antenna component 160 agenerates an electromagnetic wave (such as microwaves) propagating alonga first direction X, where the first reflector 162 a, the first drivers164 a, and the first directors 166 a are sequentially arranged along thefirst direction X and are separated apart from each other. The firstdrivers 164 a are arranged in parallel along a second direction Y andare located between the first reflector 162 a and the first directors166 a along the first direction X. In other words, as the firstreflector 162 a and the first drivers 164 a are connected to the secondisolation layer 154, and the first drivers 164 a are located between thefirst reflector 162 a and the first directors 166 a along the firstdirection X (which is a propagating direction of the electromagneticwave generated by the first antenna component 160 a), where the firstreflectors 162 a and the first drivers 164 a are overlapped with thesecond isolation layer 154 along the direction Z. In other words, thefirst reflectors 162 a and the first drivers 164 a stand on the secondisolation layer 154, for example. In some embodiments, as shown in FIG.3C, two first directors 166 a are included in one first antennacomponent 160 a; however, the disclosure is not limited. In analternative embodiment, the number of the first directors 166 a may beless than two or more than two.

In some embodiments, the second antenna component 160 b includes asecond reflector 162 b, a pair of second drivers 164 b, and seconddirectors 166 b. In some embodiments, the second reflector 162 b and thesecond drivers 164 b of the second antenna component 160 b are connectedto the second isolation layer 154 exposed by an opening (not shown) ofthe fourth polymer dielectric layer PD4 so as to electrically connect tothe second isolation layer 154. In other words, the second antennas 160b are electrically connected to the semiconductor die 130 through thesecond isolation layer 154, the second TIV 124, the first isolationlayer 152, the first TIV 122, and the redistribution structure 110. Insome embodiments, the second antenna component 160 b generates anelectromagnetic wave (such as microwaves) propagating along the seconddirection Y, where the second reflector 162 b, the second drivers 164 b,and the second directors 166 b are sequentially arranged along thesecond direction Y and are separated apart from each other. The seconddrivers 164 b are arranged in parallel along the first direction X andare located between the second reflector 162 b and the second directors166 b along the second direction Y. In other words, the second reflector162 b and the second drivers 164 b are connected to the second isolationlayer 154, and the second drivers 164 b are located between the secondreflector 162 b and the second directors 166 b along the seconddirection Y (which is a propagating direction of the electromagneticwave generated by the second antenna component 160 b), where the secondreflector 162 b and the second drivers 164 b are overlapped with thesecond isolation layer 154 along the direction Z. In other words, thesecond reflector 162 b and the second drivers 164 b stand on the secondisolation layer 154, for example. In some embodiments, as shown in FIG.3C, two second directors 166 b are included in one second antennacomponent 160 b; however, the disclosure is not limited. In analternative embodiment, the number of the second directors 166 b may beless than two or more than two.

In some embodiments, the third antenna component 160 c includes a thirdreflector 162 c, a pair of third drivers 164 c, and third directors 166c. In some embodiments, the third reflector 162 c and the third drivers164 c of the third antenna component 160 c are respectively connected tothe first isolation layer 152 exposed by openings (not shown) of thesecond polymer dielectric layer PD2 so as to electrically connect to thefirst isolation layer 152. In other words, the third antenna component160 c are electrically connected to the semiconductor die 130 throughthe first isolation layer 152, the first TIV 122, and the redistributionstructure 110. In some embodiments, the third antenna component 160 cgenerates an electromagnetic wave (such as microwaves) propagating alongthe third direction U, where the third reflector 162 c, the thirddrivers 164 c, and the third directors 166 c are sequentially arrangedalong the third direction U and are separated apart from each other. Thethird drivers 164 c are arranged in parallel along a directionperpendicular to the third direction U, and are located between thethird reflector 162 c and the third directors 166 c along the thirddirection U. In other words, the third reflector 162 c and the thirddrivers 164 c are connected to the first isolation layer 152, and thethird drivers 164 c are located between the third reflector 162 c andthe third directors 166 c along the third direction U (which is apropagating direction of the electromagnetic wave generated by the thirdantenna component 160 c), where the third reflector 162 c and the thirddrivers 164 c are overlapped with the first isolation layer 152 alongthe direction Z. In other words, the third reflector 162 c and the thirddrivers 164 c stand on the first isolation layer 152, for example. Insome embodiments, as shown in FIG. 3C, two third directors 166 c areincluded in one third antenna component 160 c; however, the disclosureis not limited. In an alternative embodiment, the number of the thirddirectors 166 c may be less than two or more than two.

In some embodiments, the fourth antenna component 160 d includes afourth reflector 162 d, a pair of fourth drivers 164 d, and fourthdirectors 166 d. In some embodiments, the fourth reflector 162 d and thefourth drivers 164 d of the fourth antenna component 160 d arerespectively connected to the first isolation layer 152 exposed byopenings (not shown) of the second polymer dielectric layer PD2 so as toelectrically connect to the first isolation layer 152. In other words,the fourth antenna component 160 d are electrically connected to thesemiconductor die 130 through the first isolation layer 152, the firstTIV 122, and the redistribution structure 110. In some embodiments, thefourth antenna component 160 d generates an electromagnetic wave (suchas microwaves) propagating along the fourth direction V, where thefourth reflector 162 d, the fourth drivers 164 d, and the fourthdirectors 166 d are sequentially arranged along the fourth direction Vand are separated apart from each other. The fourth drivers 164 d arearranged in parallel along a direction perpendicular to the fourthdirection V, and are located between the fourth reflector 162 d and thefourth directors 166 d along the fourth direction V. In other words, thefourth reflector 162 d and the fourth drivers 164 d are connected to thefirst isolation layer 152, and the fourth drivers 164 d are locatedbetween the fourth reflector 162 d and the fourth directors 166 d alongthe fourth direction V (which is a propagating direction of theelectromagnetic wave generated by the fourth antenna component 160 d),where the fourth reflector 162 d and the fourth drivers 164 d areoverlapped with the first isolation layer 152 along the direction Z. Inother words, the fourth reflector 162 d and the fourth drivers 164 dstand on the first isolation layer 152, for example. In someembodiments, as shown in FIG. 3C, two fourth directors 166 d areincluded in one fourth antenna component 160 d; however, the disclosureis not limited. In an alternative embodiment, the number of the fourthdirectors 166 d may be less than two or more than two.

In some embodiments, the fifth antenna component 160 e includes a fifthreflector 162 e, a pair of fifth drivers 164 e, and fifth directors 166e. In some embodiments, the fifth reflector 162 e and the fifth drivers164 e of the fifth antenna component 160 e are respectively connected tothe first isolation layer 152 exposed by an opening O6 and an openingsO7 of the second polymer dielectric layer PD2 so as to electricallyconnect to the first isolation layer 152. In other words, the fifthantenna component 160 e are electrically connected to the semiconductordie 130 through the first isolation layer 152, the first TIV 122, andthe redistribution structure 110. In some embodiments, the fifth antennacomponent 160 e generates an electromagnetic wave (such as microwaves)propagating along the fifth direction W, where the fifth reflector 162e, the fifth drivers 164 e, and the fifth directors 166 e aresequentially arranged along the fifth direction W and are separatedapart from each other. The fifth drivers 164 e are arranged in parallelalong a direction perpendicular to the fifth direction W, and arelocated between the fifth reflector 162 e and the fifth directors 166 ealong the fifth direction W. In other words, the fifth reflector 162 eand the fifth drivers 164 e are connected to the first isolation layer152, and the fifth drivers 164 e are located between the fifth reflector162 e and the fifth directors 166 e along the fifth direction W (whichis a propagating direction of the electromagnetic wave generated by thefifth antenna component 160 e), where the fifth reflector 162 e and thefifth drivers 164 e are overlapped with the first isolation layer 152along the direction Z. In other words, the fifth reflector 162 e and thefifth drivers 164 e stand on the first isolation layer 152, for example.In some embodiments, as shown in FIG. 3C, two fifth directors 166 e areincluded in one fifth antenna component 160 e; however, the disclosureis not limited. In an alternative embodiment, the number of the fifthdirectors 166 e may be less than two or more than two.

In some embodiments, as shown in FIGS. 3A and 3C, the third direction U,the fourth direction V, and the fifth direction W are different from thefirst direction X, the direction X′ opposite to the first direction X,the second direction Y, and the direction Y′ opposite to the seconddirection Y. In some embodiments, the first antennas (e.g. the firstantenna component 160 a and the second antenna component 160 b) and thesecond antennas (e.g. the third antenna component 160 c, the fourthantenna component 160 d, and the fifth antenna component 160 e) areconfigured as Yagi-Uda antennas. In some embodiments, the first antennas(e.g. the first antenna component 160 a and the second antenna component160 b) and the second antennas (e.g. the third antenna component 160 c,the fourth antenna component 160 d, and the fifth antenna component 160e) may be end-fire antennas or polarized end-fire antennas (such ashorizontal polarized end-fire antennas as shown in FIG. 3C or verticalpolarized end-fire antennas (not shown)), the disclosure is not limitedthereto. In one embodiment, the first antennas (e.g. the first antennacomponent 160 a and the second antenna component 160 b) and the secondantennas (e.g. the third antenna component 160 c, the fourth antennacomponent 160 d, and the fifth antenna component 160 e) may be the sameor different. Owing to the configuration of the first antenna component160 a, the second antenna component 160 b, the third antenna component160 c, the fourth antenna component 160 d and the fifth antennacomponent 160 e, a coverage range of the electromagnetic waves generatedfrom the package structure 30 is further increased, and thus theefficiency of the antenna application of the package structure 30 isenhanced.

FIG. 4A is a schematic three-dimensional side-view diagram of a packagestructure according to some exemplary embodiments of the presentdisclosure. FIG. 4B is a schematic cross-sectional view of the packagestructure depicted in FIG. 4A. FIG. 4C is a schematic explosive viewillustrating the package structure depicted in FIG. 4A. FIG. 4B is theschematic cross sectional view taken along a section line D-D′ depictedin FIG. 4C. Some components shown in FIG. 4B is omitted in FIG. 4A andFIG. 4C to show concise, schematic explosive views. The embodiments areintended to provide further explanations but are not used to limit thescope of the present disclosure. In FIG. 4A to FIG. 4C, only one die,four first antennas and four second antennas are presented forillustrative purposes; however, it should be noted that one or moredies, one or more first antennas, and one or more second antennas may beprovided.

Referring to FIG. 1A to FIG. 1C and FIG. 4A to FIG. 4C together, thepackage structure 10 depicted in FIG. 1A to FIG. 1C and the packagestructure 40 depicted in FIG. 4A to FIG. 4C has elements similar to orsubstantially the same, the elements depicted in FIG. 4A to FIG. 4Csimilar to or substantially the same as the elements described above inFIG. 1A to FIG. 1C will use the same reference numbers, and certaindetails or descriptions of the same elements will not be repeatedherein, for simplicity.

Referring to FIG. 4A, FIG. 4B and FIG. 4C, in some embodiments, apackage structure 40 includes a redistribution structure 100, aredistribution structure 110, at least one TIV 120, a semiconductor die130, an insulating encapsulation 140, first antennas 160 a including afirst group 160 a 1 and a second group 160 a 2, second antennas 160 bincluding a first group 160 b 1 and a second group 160 b 2, andconductive elements 180.

Referring to FIG. 4A and FIG. 4B, in some embodiments, the semiconductordie 130, the first group 160 a 1 of the first antennas 160 a and thefirst group 160 b 1 of the second antennas 160 b are encapsulated in theinsulating encapsulation 140, and the second group 160 a 2 of the firstantennas 160 a and the second group 160 b 2 of the second antennas 160 bare included in the redistribution structure 100.

Referring to FIG. 4B, in some embodiments, the semiconductor die 130includes an active surface 130 a, a plurality of pads 130 b distributedon the active surface 130 a, a passivation layer 130 c covering theactive surface 130 a and a portion of the pad 130 b, a plurality ofconductive pillars 130 d connecting to the pads 130 b, a dielectriclayer 130 e, and the backside surface 130 f opposite to the activesurface 130 a. The pads 130 b are partially exposed by the passivationlayer 130 c, the conductive pillars 130 d are disposed on andelectrically connected to the pads 130 b, and the dielectric layer 130 ecovers the passivation layer 130 c and exposes the conductive pillars130 d. In an alternative embodiment, the semiconductor die 130 mayinclude the pads 130 b distributed on the active surface 130 a, thepassivation layer 130 c covering the active surface 130 a and a portionof the pad 130 b, the backside surface 130 f opposite to the activesurface 130 a, where the conductive pillars 130 d and the dielectriclayer 130 e may be omitted. As shown in FIG. 4A to FIG. 4C, only onesemiconductor die is presented for illustrative purposes, however, itshould be noted that one or more semiconductor dies may be provided.

Referring to FIG. 4B, in some embodiments, the insulating encapsulation140 is located between the redistribution structure 100 and theredistribution structure 110. In other words, the redistributionstructure 100 and the redistribution structure 110 are located at twoopposite sides of the semiconductor die 130.

In some embodiments, the redistribution structure 100 includes anisolation layer 152, a first polymer dielectric layer PD1, a secondpolymer dielectric layer PD2, the second group 160 a 2 of the firstantennas 160 a, and the second group 160 b 2 of the second antennas 160b. In some embodiments, the isolation layer 152 is located between afirst polymer dielectric layer PD1 and a second polymer dielectric layerPD2, e.g. the first polymer dielectric layer PD1, the isolation layer152 and the second polymer dielectric layer PD2 are sequentially stackedone over another. In some embodiments, the second group 160 a 2 of thefirst antennas 160 a and the second group 160 b 2 of the second antennas160 b is located between a first polymer dielectric layer PD1 and asecond polymer dielectric layer PD2, e.g. the first polymer dielectriclayer PD1, the second group 160 a 2 of the first antennas 160 a/thesecond group 160 b 2 of the second antennas 160 b and the second polymerdielectric layer PD2 are sequentially stacked one over another. In someembodiments, the first polymer dielectric layer PD1 is located betweenthe isolation layer 152 and the insulating encapsulation 140. Thedisclosure is not limited thereto, for example, in one embodiment, thefirst polymer dielectric layer PD1 may be optionally omitted. In analternative embodiment, the second polymer dielectric layer PD2 may beoptionally omitted. The isolation layer 152 functions as a shieldinglayer of an electric signal or radiating wave to prevent thesemiconductor die 130 being affected by either the first antennas 160 aand/or the second antennas 160 b and/or to prevent the first antennas160 a or the second antennas 160 b being affected by each other or bythe semiconductor die 130. Furthermore, in some embodiments, the firstisolation layer 152 may include an isolation layer having patterns,where portions of the first isolation layer 152 are electricallyconnected to the semiconductor die 130 and serve as signal patterns, andother portions of the first isolation layer 152 are electricallyisolated to the semiconductor die 130 and serve as antenna ground.

In certain embodiments, a die attach film DA is provided between thebackside surface 130 f of the semiconductor die 130 and the firstpolymer dielectric layer PD1, as shown in FIG. 4B. In some embodiments,due to the die attach film DA provided between the semiconductor die 130and the first polymer dielectric layer PD1, the semiconductor die 130 isstably adhered to the first polymer dielectric layer PD1.

Referring to FIG. 4B, in some embodiments, the redistribution structure110 includes one or more metallization layers and one or morepolymer-based dielectric layers. In some embodiments, the redistributionstructure 110 includes a first polymer dielectric material layer 112 a,a first metallization layer 114 a, a second polymer dielectric materiallayer 112 b, a second metallization layer 114 b, and a third polymerdielectric material layer 112 c. The first metallization layer 114 a issandwiched between the second polymer dielectric material layer 112 band the first polymer dielectric material layer 112 a, and the secondmetallization layer 114 b is sandwiched between the third polymerdielectric material layer 112 c and the second polymer dielectricmaterial layer 112 b. In certain embodiments, a top surface of the firstmetallization layers 114 a is exposed by the first polymer dielectricmaterial layers 112 a, and a bottom surface of the second metallizationlayers 114 b is exposed by the third polymer dielectric material layers112 c. It should be noted that the redistribution structure 110 is notlimited to include three polymer dielectric material layers and/or twometallization layers, i.e., the number of dielectric_layer(s) and/ormetallization layer(s) is not limited to what is disclosed hereinaccording to the present disclosure.

In some embodiments, the exposed top surface of the first metallizationlayer 114 a is connected to the conductive pillars 130 d located on theactive surface 130 a of the semiconductor die 130 so as to electricallyconnect the semiconductor die 130 to the redistribution structure 110,and the exposed bottom surface of the second metallization layer 114 bis connected to the conductive elements 180. In an alternativeembodiment, the exposed bottom surface of the second metallization layer114 b is connected to the conductive elements 180 and the semiconductorelements 190. As shown in FIG. 4B, the redistribution structure 110 islocated between the semiconductor die 130 and the conductive elements180, and between the semiconductor die 130 and the semiconductorelements 190.

In certain embodiments, a plurality of under-ball metallurgy (UBM)patterns u1, u2 is formed on the exposed bottom surface of the secondmetallization layers 114 b of the redistribution structure 110 forelectrically connecting with the conductive elements 180 and/or thesemiconductor elements 190, respectively. As shown in FIG. 4B, forexample, the under-ball metallurgy patterns u1 are located between theconductive elements 180 and the exposed bottom surface of the secondmetallization layers 114 b, and the under-ball metallurgy patterns u2are located between the semiconductor elements 190 and the exposedbottom surface of the second metallization layers 114 b, however, thedisclosure is not limited thereto. Due to the under-ball metallurgypatterns u1 and u2 are formed on the exposed bottom surface of thesecond metallization layers 114 b of the redistribution structure 110,the later-formed conductive elements 180 and/or the semiconductorelements 190 can be accurately located on the under-ball metallurgypatterns u1 and u2 with better fixation, and the ball drop yield andreliability of the package structure 40 are improved.

Referring to FIG. 4B, in some embodiments, the at least one TIV 120includes a first TIV 122. In some embodiments, the first TIV 122 is athrough integrated fan-out (InFO) via. For simplification, only onefirst TIV 122 is presented for illustrative purposes, however, it shouldbe noted that more than two first TIV may be formed; the disclosure isnot limited thereto. The number of the first TIV 122 can be selectedbased on the demand.

In some embodiments, the first TIV 122 is encapsulated in the insulatingencapsulation 140. In some embodiments, a first end 122 a of the firstTIV 122 is connected to the exposed top surface of the firstmetallization layer 114 a of the redistribution structure 110 so as toelectrically connect to the semiconductor die 130, and a second end 122b of the first TIV 122 is connected to the isolation layer 152 of theredistribution structure 100 exposed by an opening O1 of the firstpolymer dielectric layer PD1, where the first end 122 a is opposite tothe second end 122 b. As shown in FIG. 4B, for example, the first TIV122 is electrically connected to the semiconductor die 130 through theredistribution structure 110. In some embodiments, the isolation layer152 of the redistribution structure 100 is electrically connected to thesemiconductor die 130 through the first TIV 122 and the redistributionstructure 110.

Referring to FIG. 4C, in some embodiments, each of the first group 160 a1 of the first antennas 160 a encapsulated in the insulatingencapsulation 140 includes a first reflector 162 a 1, a pair of firstdrivers 164 a 1, and first directors 166 a 1. In some embodiments, thefirst reflector 162 a 1 and the first drivers 164 a 1 are connected tothe exposed top surface of the first metallization layer 114 a of theredistribution structure 110. In other words, the first antennas 160 aencapsulated in the insulating encapsulation 140 (e.g. the first group160 a 1 of the first antennas 160 a) are electrically connected to thesemiconductor die 130 through the redistribution structure 110. On theother hand, in some embodiments, each of the second group 160 a 2 of thefirst antennas 160 a included in the redistribution structure 100includes a first reflector 162 a 2, a pair of first drivers 164 a 2, andfirst directors 166 a 2. In some embodiments, the first reflector 162 a2 and the first drivers 164 a 2 are connected to the isolation layer152. In certain embodiments, the first reflector 162 a 2 is a part ofthe isolation layer 152, and each of the first drivers 164 a 2 is inform of a L-shape (see FIG. 4C). In other words, the first antennas 160a included in the redistribution structure 100 (e.g. the second group160 a 2 of the first antennas 160 a) are electrically connected to thesemiconductor die 130 through the isolation layer 152, the first TIV122, and the redistribution structure 110.

In some embodiments, the first group 160 a 1 of the first antennas 160 aencapsulated in the insulating encapsulation 140 generates anelectromagnetic wave (such as microwaves) propagating along the firstdirection X. For the first group 160 a 1 of the first antennas 160 aencapsulated in the insulating encapsulation 140, the first reflector162 a 1, the first drivers 164 a 1, and the first directors 166 a 1 aresequentially arranged along the first direction X and are separatedapart from each other. The first drivers 164 a 1 are arranged inparallel along the direction Z, and are located between the firstreflector 162 a 1 and the first directors 166 a 1 along the firstdirection X. In other words, for the first group 160 a 1 of the firstantennas 160 a encapsulated in the insulating encapsulation 140, thefirst reflector 162 a 1 and the first drivers 164 a 1 are connected tothe redistribution structure 110, and the first drivers 164 a 1 arelocated between the first reflector 162 a 1 and the first directors 166a 1 along the first direction X (which is a propagating direction of theelectromagnetic wave generated by the first antennas 160 a encapsulatedin the insulating encapsulation 140), where the first reflector 162 a 1and the first drivers 164 a 1 are overlapped with the redistributionstructure 110 along the direction Z. In other words, the first reflector162 a 1 and the first drivers 164 a 1 stand on the redistributionstructure 110, for example.

In some embodiments, the second group 160 a 2 of the first antennas 160a included in the redistribution structure 100 generates anelectromagnetic wave (such as microwaves) propagating along the firstdirection X. For the second group 160 a 2 of the first antennas 160 aincluded in the redistribution structure 100, the first reflector 162 a2, the first drivers 164 a 2, and the first directors 166 a 2 aresequentially arranged along the first direction X and are separatedapart from each other. The first drivers 164 a 2 are arranged inparallel along the second direction Y, and are located between the firstreflector 162 a 2 and the first directors 166 a 2 along the firstdirection X. In other words, for the second group 160 a 2 of the firstantennas 160 a included in the redistribution structure 100, the firstreflector 162 a 2 and the first drivers 164 a 2 are connected to theisolation layer 152, and the first drivers 164 a 2 are located betweenthe first reflector 162 a 2 and the first directors 166 a 2 along thefirst direction X (which is a propagating direction of theelectromagnetic wave generated by the first antennas 160 a included inthe redistribution structure 100), where the first reflector 162 a 2 isa part of the isolation layer 152.

In some embodiments, as shown in FIG. 4C, two first directors areincluded in each of the first antennas 160 a; however, the disclosure isnot limited. In an alternative embodiment, the number of the firstdirectors may be less than two or more than two. In some embodiments,the first group 160 a 1 of the first antennas 160 a includes verticalpolarized antennas (where a maximum size of the first group 160 a 1 ofthe first antennas 160 a is obtained at the direction Z), while thesecond group 160 a 2 of the first antennas 160 a includes horizontalpolarized antennas (where a maximum size of the second group 160 a 2 ofthe first antennas 160 a is obtained at the second direction Y), seeFIG. 4C.

In some embodiments, the first group 160 b 1 of the second antennas 160b encapsulated in the insulating encapsulation 140 generates anelectromagnetic wave (such as microwaves) propagating along the seconddirection Y. For the first group 160 b 1 of the second antennas 160 bencapsulated in the insulating encapsulation 140, the second reflector162 b 1, the second drivers 164 b 1, and the second directors 166 b 1are sequentially arranged along the second direction Y and are separatedapart from each other. The second drivers 164 b 1 are arranged inparallel along the direction Z, and are located between the secondreflector 162 b 1 and the second directors 166 b 1 along the seconddirection Y. In other words, for the first group 160 b 1 of the secondantennas 160 b encapsulated in the insulating encapsulation 140, thesecond reflector 162 b 1 and the second drivers 164 b 1 are connected tothe redistribution structure 110, and the second drivers 164 b 1 arelocated between the second reflector 162 b 1 and the second directors166 b 1 along the second direction Y (which is a propagating directionof the electromagnetic wave generated by the second antennas 160 bencapsulated in the insulating encapsulation 140), where the secondreflector 162 b 1 and the second drivers 164 b 1 are overlapped with theredistribution structure 110 along the direction Z. In other words, thesecond reflector 162 b 1 and the second drivers 164 b 1 stand on theredistribution structure 110, for example.

In some embodiments, the second group 160 b 2 of the second antennas 160b included in the redistribution structure 100 generates anelectromagnetic wave (such as microwaves) propagating along the seconddirection Y. For the second group 160 b 2 of the second antennas 160 bincluded in the redistribution structure 100, the second reflector 162 b2, the second drivers 164 b 2, and the second directors 166 b 2 aresequentially arranged along the second direction Y and are separatedapart from each other. The second drivers 164 b 2 are arranged inparallel along the first direction X, and are located between the secondreflector 162 b 2 and the second directors 166 b 2 along the seconddirection Y. In other words, for the second group 160 b 2 of the secondantennas 160 b included in the redistribution structure 100, the secondreflector 162 b 2 and the second drivers 164 b 2 is connected to theisolation layer 152, and the second drivers 164 b 2 are located betweenthe second reflector 162 b 2 and the second directors 166 b 2 along thesecond direction Y (which is a propagating direction of theelectromagnetic wave generated by the second antennas 160 b included inthe redistribution structure 100), where the second reflector 162 b 2 isa part of the isolation layer 152.

In one embodiment, the first metallization layer 114 a and the secondmetallization layer 114 b of the redistribution structure 110 presentedimmediately below the first directors 166 a and/or second directors 166b may be optionally omitted to further prevent the first antennas 160 aand/or the second antenna 160 b being affected by the redistributionstructure 110. The disclosure is not limited thereto.

In some embodiments, as shown in FIG. 4C, two first directors areincluded in each of the second antennas 160 b; however, the disclosureis not limited. In an alternative embodiment, the number of the firstdirectors may be less than two or more than two. In some embodiments,the first group 160 b 1 of the second antennas 160 b includes verticalpolarized antennas (where a maximum size of the first group 160 b 1 ofthe second antennas 160 b is obtained at the direction Z), while thesecond group 160 b 2 of the second antennas 160 b includes horizontalpolarized antennas (where a maximum size of the second group 160 b 2 ofthe second antennas 160 b is obtained at the first direction X), seeFIG. 4C. In some embodiments, the first antennas 160 a and the secondantennas 160 b are configured as Yagi-Uda antennas. In certainembodiments, the first group 160 a 1 of the first antennas 160 a isconsidered as vertical polarized Yagi-Uda antennas, and the second group160 a 2 of the first antennas 160 a is considered as horizontalpolarized Yagi-Uda antennas. That is to say, in certain embodiments, asshown in FIG. 4C, the first group 160 b 1 of the second antennas 160 bis considered as vertical polarized Yagi-Uda antennas, and the secondgroup 160 b 2 of the second antennas 160 b is considered as horizontalpolarized Yagi-Uda antennas. Owing to the configuration of the firstantennas 160 a (including the first group 160 a 1 and the second group160 a 2) and the second antennas 160 b (including the first group 160 b1 and the second group 160 b 2), a channel capacity of theelectromagnetic waves generated from the package structure 40 isincreased and the form factor of the package structure 40 is decreased,and thus the efficiency of the antenna application of the packagestructure 40 is enhanced.

In an alternative embodiment, the pair of the first drivers 164 a 1 ofeach of the first group 160 a 1 of the first antennas 160 a encapsulatedin the insulating encapsulation 140 may be replaced with a first driverand a dummy first driver (not shown). In certain embodiments, the firstdriver is connected to the redistribution structure 110 and has asimilar dimensional size to the first directors 166 a 1, and the dummyfirst driver is a part of the first metallization layer 114 a or thesecond metallization layer 114 b of the redistribution structure 110,where the dummy first driver correspondingly has a symmetric mirrorpattern of the first driver. In an alternative embodiment, in someembodiments, the pair of the second drivers 164 b 1 of each of the firstgroup 160 b 1 of the second antennas 160 b encapsulated in theinsulating encapsulation 140 may be replaced with a second driver and adummy second driver (not shown). In certain embodiments, the seconddriver is connected to the redistribution structure 110 and has asimilar dimensional size to the second directors 166 b 1, and the dummysecond driver is a part of the first metallization layer 114 a or thesecond metallization layer 114 b of the redistribution structure 110,where the dummy second driver correspondingly has a symmetric mirrorpattern of the second driver. The disclosure is not limited thereto.

FIG. 5A is a schematic three-dimensional side-view diagram of a packagestructure according to some exemplary embodiments of the presentdisclosure. FIG. 5B is a schematic cross-sectional view of the packagestructure depicted in FIG. 5A. FIG. 5C is a schematic explosive viewillustrating the package structure depicted in FIG. 5A. FIG. 5B is theschematic cross sectional view taken along a section line E-E′ depictedin FIG. 5C. Some components shown in FIG. 5B is omitted in FIG. 5A andFIG. 5C to show concise, schematic explosive views. The embodiments areintended to provide further explanations but are not used to limit thescope of the present disclosure. In FIG. 5A to FIG. 5C, only one die,four first antennas and four second antennas are presented forillustrative purposes; however, it should be noted that one or moredies, one or more first antennas, and one or more second antennas may beprovided.

Referring to FIG. 4A to FIG. 4C and FIG. 5A to FIG. 5C together, thepackage structure 40 depicted in FIG. 4A to FIG. 4C and the packagestructure 50 depicted in FIG. 5A to FIG. 5C is similar, the differenceis that, the package structure 50 depicted in FIG. 5A to FIG. 5C furtherincludes a redistribution structure 200 and a dielectric layer 210located between the redistribution structure 200 and the redistributionstructure 100. The elements depicted in FIG. 5A to FIG. 5C similar to orsubstantially the same as the elements described above in FIG. 4A toFIG. 4C will use the same reference numbers, and certain details ordescriptions of the same elements will not be repeated herein, forsimplicity.

Referring to FIG. 5A to FIG. 5C, in some embodiments, the redistributionstructure 200 is located above the redistribution structure 100 andlocated on the dielectric layer 210. In some embodiments, the dielectriclayer 210 is located between the redistribution structure 200 and theredistribution structure 100. In some embodiments, the redistributionstructure 100 is located between the dielectric layer 210 and theinsulating encapsulation 140 and between the dielectric layer 210 andthe semiconductor die 130. In some embodiments, the dielectric layer 210may include a molding compound, such as plastic materials, epoxy resin,polyimide, polyethylene terephthalate (PET), polyvinyl chloride (PVC),polymethylmethacrylate (PMMA), polymer components doped with fillersincluding fiber, clay, ceramic, inorganic particles, or combinationthereof, the disclosure is not limited thereto.

In some embodiments, the redistribution structure 200 includes antennasAP, a third polymer dielectric layer PD3 and a fourth polymer dielectriclayer PD4, where the antennas AP are located between the third polymerdielectric layer PD3 and the fourth polymer dielectric layer PD4. Incertain embodiments, the third polymer dielectric layer PD3 is locatedbetween the antennas AP and the dielectric layer 210. In someembodiments, the isolation layer 152 is overlapped with the antennas AP,and the antennas AP are electrically coupled with the isolation layer152. The disclosure is not limited thereto, for example, in oneembodiment, the third polymer dielectric layer PD3 may be optionallyomitted. In an alternative embodiment, the fourth polymer dielectriclayer PD4 may be optionally omitted. The isolation layer 152 overlappedwith the antennas AP and electrically isolated from the first TIV 122serves as a ground plate, and the isolation layer 152 connected to thefirst TIV 122 serves as a feed-line. In some embodiments, a part of theisolation layer 152 is referred as the ground plate of antennas AP, andanother part of the isolation layer 152 is referred as the feed line ofantennas AP.

In some embodiments, the material of the antennas AP includes aluminum,titanium, copper, nickel, tungsten, and/or alloys thereof. In certainembodiments, the antennas AP are arranged in form of a matrix, such asthe N×N array or N×M arrays (N, M>0, N may or may not be equal to M). Insome embodiments, the antennas AP may include patch antennas. Owing tothe configuration of the first antennas 160 a (including the first group160 a 1 and the second group 160 a 2), the second antennas 160 b(including the first group 160 b 1 and the second group 160 b 2) and theantennas AP, a coverage range of the electromagnetic waves generatedfrom the package structure 50 is further increased, and thus theefficiency of the antenna application of the package structure 50 isenhanced. As shown in FIG. 5A and FIG. 5C, in some embodiments, thepackage structure 50 includes the antennas AP arranged in form of anarray, such as a 2×2 array, however, the disclosure is not limitedthereto. The size of the array for the antennas AP can be designated andselected based on the demand.

According to some embodiments, a package structure includes aninsulating encapsulation, at least one semiconductor die, at least onefirst antenna and at least one second antenna. The insulatingencapsulation includes a first portion, a second portion and a thirdportion, wherein the second portion is located between the first portionand the third portion. The at least one semiconductor die isencapsulated in the first portion of the insulating encapsulation. Theat least one first antenna is electrically connected to the at least onesemiconductor die and encapsulated in the third portion of theinsulating encapsulation. The at least one second antenna iselectrically connected to the at least one semiconductor die andencapsulated in the second portion of the insulating encapsulation.

According to some embodiments, a package structure includes aninsulating encapsulation, at least one semiconductor die, firstantennas, and second antennas. The insulating encapsulation includes afirst portion and a second portion stacked on the first portion. The atleast one semiconductor die is encapsulated in the first portion of theinsulating encapsulation, and the second portion and the third portionare stacked on the at least one semiconductor die. The first antennasare electrically connected to the at least one semiconductor die,wherein a portion of the first antenna is encapsulated in the firstportion of the insulating encapsulation, and an another portion of thefirst antenna is encapsulated in the second portion of the insulatingencapsulation. The second antennas are electrically connected to the atleast one semiconductor die, wherein a portion of the second antennas isencapsulated in the first portion of the insulating encapsulation, andan another portion of the second antenna is encapsulated in the secondportion of the insulating encapsulation.

According to some embodiments, a package structure includes aninsulating encapsulation, a first redistribution structure, at least onesemiconductor die, first antennas, and second antennas. The firstredistribution structure is located on the insulating encapsulation. Theat least one semiconductor die is encapsulated in the insulatingencapsulation and electrically connected to the first redistributionstructure. The first antennas are electrically connected to the at leastone semiconductor die, wherein a first group of the first antennas isencapsulated in the insulating encapsulation, and a second group of thefirst antennas is located in the first redistribution structure. Thesecond antennas are electrically connected to the at least onesemiconductor die, wherein a first group of the second antennas isencapsulated in the insulating encapsulation, and a second group of thesecond antennas is located in the first redistribution structure.

According to some embodiments, a package structure includes a firstredistribution circuit structure, a semiconductor die, first antennasand second antennas. The semiconductor die is located on andelectrically connected to the first redistribution circuit structure.The first antennas and the second antennas are located over the firstredistribution circuit structure, and are electrically connected to thesemiconductor die through the first redistribution circuit structure. Afirst group of the first antennas are located at a first position, afirst group of the second antennas are located at a second position, andthe first position is different from the second position in a stackingdirection of the first redistribution circuit structure and thesemiconductor die.

According to some embodiments, a package structure includes asemiconductor die, a first redistribution circuit structure, a secondredistribution circuit structure, a plurality of first antennas, and aplurality of second antennas. The first redistribution circuit structureand the second redistribution circuit structure are electricallyconnected to the semiconductor die, wherein the semiconductor die arebetween the first redistribution circuit structure and the secondredistribution circuit structure. The plurality of first antennas areelectrically connected to the semiconductor die, wherein a first groupof the first antennas is located aside of the semiconductor die and asecond group of the first antennas is located on the semiconductor die.The plurality of second antennas are electrically connected to thesemiconductor die, wherein a first group of the second antennas islocated aside of the semiconductor die and a second group of the secondantennas is located on the semiconductor die.

According to some embodiments, a package structure includes aredistribution circuit structure, a semiconductor die, and a pluralityof antennas. The semiconductor die is located on and electricallyconnected to the redistribution circuit structure. The plurality ofantennas are electrically connected to the semiconductor die and overthe redistribution circuit structure, wherein the antennas are arrangedinto a first tier and a second tier stacked thereon. In a verticalprojection on the redistribution circuit structure, a projection of thesemiconductor die is aside of projections of the antennas.

The foregoing outlines features of several embodiments so that thoseskilled in the art may better understand the aspects of the presentdisclosure. Those skilled in the art should appreciate that they mayreadily use the present disclosure as a basis for designing or modifyingother processes and structures for carrying out the same purposes and/orachieving the same advantages of the embodiments introduced herein.Those skilled in the art should also realize that such equivalentconstructions do not depart from the spirit and scope of the presentdisclosure, and that they may make various changes, substitutions, andalterations herein without departing from the spirit and scope of thepresent disclosure.

What is claimed is:
 1. A package structure, comprising: a firstsemiconductor die, encapsulated in a first insulating encapsulation; afirst antenna and a second antenna, electrically coupled to the firstsemiconductor die, wherein the first antenna and the second antenna arearranged independently next to or atop of the first semiconductor die,and wherein the first antenna generates an electromagnetic wavepropagating along a first direction, the second antenna generates anelectromagnetic wave propagating along a second direction, and the firstdirection is different from the second direction; and a first metalliclayer, located between the first antenna and the second antenna and overthe first semiconductor die, wherein a portion of the first metalliclayer is electrically connected to the first semiconductor die andanother portion of the first metallic layer is electrically isolatedfrom the first semiconductor die.
 2. The package structure of claim 1,further comprising: a second insulating encapsulation, encapsulating thefirst antenna; a third insulating encapsulation, encapsulating thesecond antenna, wherein the second insulating encapsulation is locatedbetween the first insulating encapsulation and the third insulatingencapsulation; a redistribution structure, located on and electricallyconnected to the first semiconductor die, the first insulatingencapsulation is located between the second insulating encapsulation andthe redistribution structure; and a second semiconductor die, located onand electrically connected to the redistribution structure, wherein theredistribution structure is located between the second semiconductor dieand the first semiconductor die, and the second semiconductor die iselectrically connected to the first semiconductor die through theredistribution structure.
 3. The package structure of claim 1, furthercomprising: a third antenna, next to the first antenna and generating anelectromagnetic wave propagating along a third direction; and a fourthantenna, next to the second antenna and generating an electromagneticwave propagating along a fourth direction, wherein the first direction,the second direction, the third direction and the fourth direction aredifferent from one another.
 4. The package structure of claim 3, furthercomprising: a second insulating encapsulation, wherein the first antennaand the third antenna are encapsulated in the first insulatingencapsulation, the second antenna and the fourth antenna areencapsulated in the second insulating encapsulation, and the secondinsulating encapsulation is located on the first insulatingencapsulation; a redistribution structure, located on and electricallyconnected to the first semiconductor die, the first insulatingencapsulation is located between the second insulating encapsulation andthe redistribution structure; and a second semiconductor die, located onand electrically connected to the redistribution structure, wherein theredistribution structure is located between the second semiconductor dieand the first semiconductor die, and the second semiconductor die iselectrically connected to the first semiconductor die through theredistribution structure.
 5. The package structure of claim 4, furthercomprising: a first through interlayer via wall, encapsulated in thefirst insulating encapsulation and separating the first antenna and thethird antenna, wherein the first through interlayer via wall iselectrically connected to the redistribution structure; and a secondthrough interlayer via wall, encapsulated in the second insulatingencapsulation and separating the second antenna and the fourth antenna,wherein the second through interlayer via wall is electrically connectedto the first metallic layer.
 6. The package structure of claim 3,further comprising: a second insulating encapsulation and a thirdinsulating encapsulation, wherein the first antenna and the thirdantenna are encapsulated in the second insulating encapsulation, thesecond antenna is encapsulated in the third insulating encapsulation,the fourth antenna is encapsulated in the second insulatingencapsulation or the third insulating encapsulation, and the secondinsulating encapsulation is located between the first insulatingencapsulation and the third insulating encapsulation; a redistributionstructure, located on and electrically connected to the firstsemiconductor die, the first insulating encapsulation is located betweenthe second insulating encapsulation and the redistribution structure;and a second semiconductor die, located on and electrically connected tothe redistribution structure, wherein the redistribution structure islocated between the second semiconductor die and the first semiconductordie, and the second semiconductor die is electrically connected to thefirst semiconductor die through the redistribution structure.
 7. Thepackage structure of claim 3, a first redistribution structure and asecond redistribution structure, located on two opposite sides of thefirst insulating encapsulation and electrically connected to the firstsemiconductor die, wherein the first antenna and the third antenna areencapsulated in the first insulating encapsulation, and the secondantenna and the fourth antenna are embedded in the second redistributionstructure; and a second semiconductor die, located on and electricallyconnected to the first redistribution structure, wherein the firstredistribution structure is located between the second semiconductor dieand the first semiconductor die, and the second semiconductor die iselectrically connected to the first semiconductor die through the firstredistribution structure.
 8. The package structure of claim 7, furthercomprising: a dielectric layer, located on the second redistributionstructure; and a fifth antenna, located on the dielectric layer, whereinthe dielectric layer is sandwiched between the fifth antenna and thesecond redistribution structure, wherein the fifth antenna generates anelectromagnetic wave propagating along a direction perpendicular to thefirst direction, the second direction, the third direction and thefourth direction.
 9. The package structure of claim 8, wherein the fifthantenna comprises a plurality of patch antennas arranged into an arrayover the first metallic layer.
 10. The package structure of claim 1,further comprising: a second metallic layer, located between the firstantenna and the first semiconductor die, wherein a portion of the secondmetallic layer is electrically connected to the first semiconductor dieand another portion of the second metallic layer is electricallyisolated from the first semiconductor die; and a through via, locatedbetween and electrically connecting the first metallic layer and thesecond metallic layer, wherein the through via is electrically connectedto the first semiconductor die.
 11. A package structure, comprising: afirst redistribution structure; a first semiconductor die, located onand electrically connected to the first redistribution structure; athrough via, located on and electrically connected to the firstredistribution structure and next to the first semiconductor die; aninsulating encapsulation, encapsulating the first semiconductor die andthe through via; a second redistribution structure, located on andelectrically connected to the through via and over the insulatingencapsulation; first antennas and second antennas, next to andelectrically connected to the first semiconductor die and encapsulatedin the insulating encapsulation, wherein propagating directions ofelectromagnetic waves generated by the first antennas and the secondantennas are different; and third antennas and fourth antennas, locatedon and electrically connected to the first semiconductor die andembedded in the second redistribution structure, wherein propagatingdirections of electromagnetic waves generated by the third antennas andthe fourth antennas are different.
 12. The package structure of claim11, wherein: the first antennas and the second antennas independentlycomprise a pair of drivers spacing apart along a stacking direction ofthe first redistribution structure and the second redistributionstructure, and the third antennas and the fourth antennas independentlycomprise a pair of drivers spacing apart along a direction perpendicularto the stacking direction.
 13. The package structure of claim 11,wherein the electromagnetic waves generated by the first antennas andthe third antennas generate propagating along a first direction, and theelectromagnetic waves generated by the second antennas and the fourthantennas propagating along a second direction, where the first directionis different from the second direction.
 14. The package structure ofclaim 11, wherein along a stacking direction of the first redistributionstructure and the second redistribution structure, a thickness of thefirst antennas and a thickness of the second antennas are greater than athickness of the third antennas and a thickness of the fourth antennas.15. The package structure of claim 11, further comprising: conductiveterminals, located on and electrically connected to the firstredistribution structure and electrically connected to the firstsemiconductor die; and a second semiconductor die, located on andelectrically connected to the first redistribution structure andelectrically connected to the first semiconductor die, wherein thesecond semiconductor die and the conductive terminals are arrangedside-by-side on a side of the first redistribution structure, whereinthe first redistribution structure is located between the insulatingencapsulation and the conductive terminals.
 16. The package structure ofclaim 11, further comprising: a dielectric layer, located on the secondredistribution structure; and a fifth antenna, located over andelectrically connected to the first semiconductor die and located on thedielectric layer, wherein the dielectric layer is sandwiched between thefifth antenna and the second redistribution structure, and wherein apropagating direction of an electromagnetic wave generated by the fifthantenna is perpendicular to the propagating directions of the firstantennas, the second antenna, the third antennas and the fourthantennas.
 17. A package structure, comprising: a semiconductor die; afirst insulating encapsulation, encapsulating the semiconductor die; asecond insulating encapsulation, over the first insulatingencapsulation; a first redistribution structure, located between thefirst insulating encapsulation and the second insulating encapsulation;a first dielectric layer, located over the second insulatingencapsulation, wherein the second insulating encapsulation is betweenthe first dielectric layer and the first redistribution structure; and afirst antenna, over the first insulating encapsulation and covered bythe first dielectric layer, wherein the first antenna is electricallyconnected to the semiconductor die and comprises: an antenna portion,located between the second insulating encapsulation and the firstdielectric layer; and a ground portion, embedded in the firstredistribution structure and electrically connected to the semiconductordie.
 18. The package structure of claim 17, further comprising: a secondredistribution structure, disposed on the semiconductor die and furtherextends over the first insulating encapsulation; a conductive pillar,next to the semiconductor die and encapsulated in the first insulatingencapsulation, wherein the conductive pillar is electrically coupled tothe semiconductor die; and a plurality of conductive terminals,connected to the second redistribution structure, wherein the secondredistribution structure is located between and electrically connectedto the semiconductor die and the plurality of conductive terminals. 19.The package structure of claim 18, further comprising: a plurality ofsecond antennas, next to the semiconductor die and encapsulated in thefirst insulating encapsulation, wherein the plurality of second antennasare electrically coupled to the semiconductor die, wherein theconductive pillar is located between the semiconductor die and theplurality of second antennas along a direction perpendicular to astacking direction of the first insulating encapsulation and the secondinsulating encapsulation.
 20. The package structure of claim 17, furthercomprising: a second dielectric layer, located between the secondinsulating encapsulation and the first dielectric layer, wherein theantenna portion is sandwiched between the first dielectric layer and thesecond dielectric layer.